19494121102920 has 96 divisors (see below), whose sum is σ = 63390497526720. Its totient is φ = 5195592996480.

The previous prime is 19494121102909. The next prime is 19494121102991. The reversal of 19494121102920 is 2920112149491.

It is a happy number.

19494121102920 is a `hidden beast` number, since 1 + 9 + 49 + 412 + 1 + 102 + 92 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14127934 + ... + 15446253.

It is an arithmetic number, because the mean of its divisors is an integer number (660317682570).

Almost surely, 2^{19494121102920} is an apocalyptic number.

19494121102920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19494121102920 is an abundant number, since it is smaller than the sum of its proper divisors (43896376423800).

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

19494121102920 is a wasteful number, since it uses less digits than its factorization.

19494121102920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29576035 (or 29576028 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 45.

The spelling of 19494121102920 in words is "nineteen trillion, four hundred ninety-four billion, one hundred twenty-one million, one hundred two thousand, nine hundred twenty".