55719928719 has 24 divisors (see below), whose sum is σ = 99057652512. Its totient is φ = 29390731200.

The previous prime is 55719928717. The next prime is 55719928727. The reversal of 55719928719 is 91782991755.

55719928719 is a `hidden beast` number, since 557 + 1 + 9 + 9 + 2 + 8 + 71 + 9 = 666.

It is not a de Polignac number, because 55719928719 - 2¹ = 55719928717 is a prime.

It is a super-2 number, since 2×55719928719² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55719928717) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 34016232 + ... + 34017869.

It is an arithmetic number, because the mean of its divisors is an integer number (4127402188).

Almost surely, 2^55719928719 is an apocalyptic number.

55719928719 is a deficient number, since it is larger than the sum of its proper divisors (43337723793).

55719928719 is a wasteful number, since it uses less digits than its factorization.

55719928719 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68034127 (or 68034124 counting only the distinct ones).

The product of its digits is 14288400, while the sum is 63.

The spelling of 55719928719 in words is "fifty-five billion, seven hundred nineteen million, nine hundred twenty-eight thousand, seven hundred nineteen".