55779539486 has 16 divisors (see below), whose sum is σ = 91293387120. Its totient is φ = 25349398080.

The previous prime is 55779539479. The next prime is 55779539521. The reversal of 55779539486 is 68493597755.

It is a super-2 number, since 2×55779539486² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 130151 + ... + 358466.

It is an arithmetic number, because the mean of its divisors is an integer number (5705836695).

Almost surely, 2^55779539486 is an apocalyptic number.

55779539486 is a deficient number, since it is larger than the sum of its proper divisors (35513847634).

55779539486 is a wasteful number, since it uses less digits than its factorization.

55779539486 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 493819.

The product of its digits is 285768000, while the sum is 68.

The spelling of 55779539486 in words is "fifty-five billion, seven hundred seventy-nine million, five hundred thirty-nine thousand, four hundred eighty-six".