78211483900 has 108 divisors (see below), whose sum is σ = 194662134576. Its totient is φ = 27203897600.

The previous prime is 78211483859. The next prime is 78211483921. The reversal of 78211483900 is 938411287.

It is a super-2 number, since 2×78211483900² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 137784 + ... + 418816.

It is an arithmetic number, because the mean of its divisors is an integer number (1802427172).

Almost surely, 2^78211483900 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78211483900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97331067288).

78211483900 is an abundant number, since it is smaller than the sum of its proper divisors (116450650676).

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

78211483900 is a wasteful number, since it uses less digits than its factorization.

78211483900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 281092 (or 281074 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 43.

The spelling of 78211483900 in words is "seventy-eight billion, two hundred eleven million, four hundred eighty-three thousand, nine hundred".