109478773611900 has 864 divisors, whose sum is σ = 435539723673600. Its totient is φ = 22339692403200.

The previous prime is 109478773611859. The next prime is 109478773611943. The reversal of 109478773611900 is 9116377874901.

109478773611900 is a `hidden beast` number, since 1 + 0 + 9 + 4 + 7 + 8 + 7 + 7 + 3 + 611 + 9 + 0 + 0 = 666.

It is a super-2 number, since 2×109478773611900² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 4019178481 + ... + 4019205719.

It is an arithmetic number, because the mean of its divisors is an integer number (504096902400).

Almost surely, 2^{109478773611900} is an apocalyptic number.

109478773611900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 109478773611900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (217769861836800).

109478773611900 is an abundant number, since it is smaller than the sum of its proper divisors (326060950061700).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

109478773611900 is a wasteful number, since it uses less digits than its factorization.

109478773611900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28319 (or 28309 counting only the distinct ones).

The product of its (nonzero) digits is 16003008, while the sum is 63.

The spelling of 109478773611900 in words is "one hundred nine trillion, four hundred seventy-eight billion, seven hundred seventy-three million, six hundred eleven thousand, nine hundred".