19975855790970 has 96 divisors (see below), whose sum is σ = 53614168717824. Its totient is φ = 5154910588800.

The previous prime is 19975855790929. The next prime is 19975855791013. The reversal of 19975855790970 is 7909755857991.

19975855790970 is a `hidden beast` number, since 1 + 9 + 9 + 7 + 58 + 557 + 9 + 0 + 9 + 7 + 0 = 666.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 19975855790970.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 122491585 + ... + 122654555.

It is an arithmetic number, because the mean of its divisors is an integer number (558480924144).

Almost surely, 2^{19975855790970} is an apocalyptic number.

19975855790970 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19975855790970 is an abundant number, since it is smaller than the sum of its proper divisors (33638312926854).

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

19975855790970 is a wasteful number, since it uses less digits than its factorization.

19975855790970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206948 (or 206945 counting only the distinct ones).

The product of its (nonzero) digits is 2250423000, while the sum is 81.

The spelling of 19975855790970 in words is "nineteen trillion, nine hundred seventy-five billion, eight hundred fifty-five million, seven hundred ninety thousand, nine hundred seventy".