56144019999 has 16 divisors (see below), whose sum is σ = 80475194880. Its totient is φ = 34704924480.

The previous prime is 56144019979. The next prime is 56144020003. The reversal of 56144019999 is 99991044165.

It is not a de Polignac number, because 56144019999 - 2¹⁵ = 56143987231 is a prime.

It is a super-2 number, since 2×56144019999² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56144019959) 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 15 ways as a sum of consecutive naturals, for example, 10475862 + ... + 10481219.

It is an arithmetic number, because the mean of its divisors is an integer number (5029699680).

Almost surely, 2^56144019999 is an apocalyptic number.

56144019999 is a deficient number, since it is larger than the sum of its proper divisors (24331174881).

56144019999 is a wasteful number, since it uses less digits than its factorization.

56144019999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20957150.

The product of its (nonzero) digits is 3149280, while the sum is 57.

The spelling of 56144019999 in words is "fifty-six billion, one hundred forty-four million, nineteen thousand, nine hundred ninety-nine".