77476661007 has 16 divisors (see below), whose sum is σ = 106106995680. Its totient is φ = 50249054592.

The previous prime is 77476660997. The next prime is 77476661051. The reversal of 77476661007 is 70016667477.

It is not a de Polignac number, because 77476661007 - 2¹⁵ = 77476628239 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77476661807) 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, 993969 + ... + 1069077.

It is an arithmetic number, because the mean of its divisors is an integer number (6631687230).

Almost surely, 2^77476661007 is an apocalyptic number.

77476661007 is a deficient number, since it is larger than the sum of its proper divisors (28630334673).

77476661007 is a wasteful number, since it uses less digits than its factorization.

77476661007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84442.

The product of its (nonzero) digits is 2074464, while the sum is 51.

The spelling of 77476661007 in words is "seventy-seven billion, four hundred seventy-six million, six hundred sixty-one thousand, seven".