1019911996056 has 16 divisors (see below), whose sum is σ = 2549779990200. Its totient is φ = 339970665344.

The previous prime is 1019911996027. The next prime is 1019911996127. The reversal of 1019911996056 is 6506991199101.

It is a junction number, because it is equal to n+sod(n) for n = 1019911995987 and 1019911996005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21248166561 + ... + 21248166608.

Almost surely, 2^{1019911996056} is an apocalyptic number.

It is an amenable number.

1019911996056 is an abundant number, since it is smaller than the sum of its proper divisors (1529867994144).

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

1019911996056 is a wasteful number, since it uses less digits than its factorization.

1019911996056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42496333178 (or 42496333174 counting only the distinct ones).

The product of its (nonzero) digits is 1180980, while the sum is 57.

The spelling of 1019911996056 in words is "one trillion, nineteen billion, nine hundred eleven million, nine hundred ninety-six thousand, fifty-six".