19755458457 has 32 divisors (see below), whose sum is σ = 30363648000. Its totient is φ = 11191436928.

The previous prime is 19755458453. The next prime is 19755458473. The reversal of 19755458457 is 75485455791.

It is a happy number.

It is not a de Polignac number, because 19755458457 - 2² = 19755458453 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 19755458457.

It is not an unprimeable number, because it can be changed into a prime (19755458453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5596269 + ... + 5599797.

It is an arithmetic number, because the mean of its divisors is an integer number (948864000).

Almost surely, 2^19755458457 is an apocalyptic number.

It is an amenable number.

19755458457 is a deficient number, since it is larger than the sum of its proper divisors (10608189543).

19755458457 is a wasteful number, since it uses less digits than its factorization.

19755458457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5765.

The product of its digits is 35280000, while the sum is 60.

The spelling of 19755458457 in words is "nineteen billion, seven hundred fifty-five million, four hundred fifty-eight thousand, four hundred fifty-seven".