77040440070 has 64 divisors (see below), whose sum is σ = 201783377664. Its totient is φ = 18669294720.

The previous prime is 77040440051. The next prime is 77040440093. The reversal of 77040440070 is 7004404077.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 841884 + ... + 928896.

It is an arithmetic number, because the mean of its divisors is an integer number (3152865276).

Almost surely, 2^77040440070 is an apocalyptic number.

77040440070 is an abundant number, since it is smaller than the sum of its proper divisors (124742937594).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

77040440070 is a wasteful number, since it uses less digits than its factorization.

77040440070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89717.

The product of its (nonzero) digits is 21952, while the sum is 33.

The spelling of 77040440070 in words is "seventy-seven billion, forty million, four hundred forty thousand, seventy".