261677706732 has 60 divisors (see below), whose sum is σ = 736698550896. Its totient is φ = 80516216160.

The previous prime is 261677706679. The next prime is 261677706737. The reversal of 261677706732 is 237607776162.

It is a super-3 number, since 3×261677706732³ (a number of 35 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (261677706737) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 31059144 + ... + 31067567.

Almost surely, 2^261677706732 is an apocalyptic number.

It is an amenable number.

261677706732 is an abundant number, since it is smaller than the sum of its proper divisors (475020844164).

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

261677706732 is a wasteful number, since it uses less digits than its factorization.

261677706732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62126740 (or 62126729 counting only the distinct ones).

The product of its (nonzero) digits is 6223392, while the sum is 54.

The spelling of 261677706732 in words is "two hundred sixty-one billion, six hundred seventy-seven million, seven hundred six thousand, seven hundred thirty-two".