91275376612 has 18 divisors (see below), whose sum is σ = 185810588502. Its totient is φ = 39118018464.

The previous prime is 91275376603. The next prime is 91275376657. The reversal of 91275376612 is 21667357219.

It can be written as a sum of positive squares in only one way, i.e., 89961604096 + 1313772516 = 299936^2 + 36246^2 .

It is a Harshad number since it is a multiple of its sum of digits (49).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 232845153 + ... + 232845544.

Almost surely, 2^91275376612 is an apocalyptic number.

It is an amenable number.

91275376612 is an abundant number, since it is smaller than the sum of its proper divisors (94535211890).

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

91275376612 is a wasteful number, since it uses less digits than its factorization.

91275376612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 465690715 (or 465690706 counting only the distinct ones).

The product of its digits is 952560, while the sum is 49.

The spelling of 91275376612 in words is "ninety-one billion, two hundred seventy-five million, three hundred seventy-six thousand, six hundred twelve".