77575138266 has 32 divisors (see below), whose sum is σ = 163754015040. Its totient is φ = 24431721984.

The previous prime is 77575138241. The next prime is 77575138309. The reversal of 77575138266 is 66283157577.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 869655 + ... + 954698.

It is an arithmetic number, because the mean of its divisors is an integer number (5117312970).

Almost surely, 2^77575138266 is an apocalyptic number.

77575138266 is an abundant number, since it is smaller than the sum of its proper divisors (86178876774).

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

77575138266 is a wasteful number, since it uses less digits than its factorization.

77575138266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1824750.

The product of its digits is 14817600, while the sum is 57.

The spelling of 77575138266 in words is "seventy-seven billion, five hundred seventy-five million, one hundred thirty-eight thousand, two hundred sixty-six".