56780899439 has 8 divisors (see below), whose sum is σ = 61948670160. Its totient is φ = 51614107200.

The previous prime is 56780899403. The next prime is 56780899451. The reversal of 56780899439 is 93499808765.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56780899439 is a prime.

It is a super-2 number, since 2×56780899439² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56780899939) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 120542 + ... + 357899.

It is an arithmetic number, because the mean of its divisors is an integer number (7743583770).

Almost surely, 2^56780899439 is an apocalyptic number.

56780899439 is a deficient number, since it is larger than the sum of its proper divisors (5167770721).

56780899439 is a wasteful number, since it uses less digits than its factorization.

56780899439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 489241.

The product of its (nonzero) digits is 117573120, while the sum is 68.

The spelling of 56780899439 in words is "fifty-six billion, seven hundred eighty million, eight hundred ninety-nine thousand, four hundred thirty-nine".