77477013847 has 16 divisors (see below), whose sum is σ = 79700549472. Its totient is φ = 75290371200.

The previous prime is 77477013833. The next prime is 77477013853. The reversal of 77477013847 is 74831077477.

It is a cyclic number.

It is not a de Polignac number, because 77477013847 - 2¹⁵ = 77476981079 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77477013347) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1853793 + ... + 1895125.

It is an arithmetic number, because the mean of its divisors is an integer number (4981284342).

Almost surely, 2^77477013847 is an apocalyptic number.

77477013847 is a deficient number, since it is larger than the sum of its proper divisors (2223535625).

77477013847 is a wasteful number, since it uses less digits than its factorization.

77477013847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41778.

The product of its (nonzero) digits is 6453888, while the sum is 55.

The spelling of 77477013847 in words is "seventy-seven billion, four hundred seventy-seven million, thirteen thousand, eight hundred forty-seven".