19945999415700 has 288 divisors, whose sum is σ = 69217907270400. Its totient is φ = 4912237693440.

The previous prime is 19945999415669. The next prime is 19945999415737. The reversal of 19945999415700 is 751499954991.

19945999415700 is a `hidden beast` number, since 1 + 9 + 9 + 4 + 5 + 9 + 9 + 9 + 41 + 570 + 0 = 666.

It is a super-2 number, since 2×19945999415700² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 3736887 + ... + 7338686.

It is an arithmetic number, because the mean of its divisors is an integer number (240339955800).

Almost surely, 2^{19945999415700} is an apocalyptic number.

19945999415700 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19945999415700 is an abundant number, since it is smaller than the sum of its proper divisors (49271907854700).

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

19945999415700 is a wasteful number, since it uses less digits than its factorization.

19945999415700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11075648 (or 11075635 counting only the distinct ones).

The product of its (nonzero) digits is 165337200, while the sum is 72.

The spelling of 19945999415700 in words is "nineteen trillion, nine hundred forty-five billion, nine hundred ninety-nine million, four hundred fifteen thousand, seven hundred".