19907656210416 has 80 divisors (see below), whose sum is σ = 55386971569440. Its totient is φ = 6125117352960.

The previous prime is 19907656210361. The next prime is 19907656210439. The reversal of 19907656210416 is 61401265670991.

It is a happy number.

It is a super-2 number, since 2×19907656210416² (a number of 27 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 (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11457130 + ... + 13079798.

It is an arithmetic number, because the mean of its divisors is an integer number (692337144618).

Almost surely, 2^{19907656210416} is an apocalyptic number.

19907656210416 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

19907656210416 is an abundant number, since it is smaller than the sum of its proper divisors (35479315359024).

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

19907656210416 is a wasteful number, since it uses less digits than its factorization.

19907656210416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1642354 (or 1642348 counting only the distinct ones).

The product of its (nonzero) digits is 4898880, while the sum is 57.

The spelling of 19907656210416 in words is "nineteen trillion, nine hundred seven billion, six hundred fifty-six million, two hundred ten thousand, four hundred sixteen".