19956057054 has 16 divisors (see below), whose sum is σ = 40114716048. Its totient is φ = 6618252032.

The previous prime is 19956057031. The next prime is 19956057061. The reversal of 19956057054 is 45075065991.

It is a junction number, because it is equal to n+sod(n) for n = 19956056988 and 19956057006.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8440467 + ... + 8442830.

It is an arithmetic number, because the mean of its divisors is an integer number (2507169753).

Almost surely, 2^19956057054 is an apocalyptic number.

19956057054 is an abundant number, since it is smaller than the sum of its proper divisors (20158658994).

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

19956057054 is a wasteful number, since it uses less digits than its factorization.

19956057054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16883499.

The product of its (nonzero) digits is 1701000, while the sum is 51.

The spelling of 19956057054 in words is "nineteen billion, nine hundred fifty-six million, fifty-seven thousand, fifty-four".