12177281016 has 64 divisors (see below), whose sum is σ = 35815543200. Its totient is φ = 3820322304.

The previous prime is 12177281009. The next prime is 12177281041. The reversal of 12177281016 is 61018277121.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

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, 1654455 + ... + 1661798.

Almost surely, 2^12177281016 is an apocalyptic number.

It is an amenable number.

12177281016 is an abundant number, since it is smaller than the sum of its proper divisors (23638262184).

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

12177281016 is a wasteful number, since it uses less digits than its factorization.

12177281016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3316285 (or 3316275 counting only the distinct ones).

The product of its (nonzero) digits is 9408, while the sum is 36.

The spelling of 12177281016 in words is "twelve billion, one hundred seventy-seven million, two hundred eighty-one thousand, sixteen".