261972609032 has 16 divisors (see below), whose sum is σ = 491863333200. Its totient is φ = 130809053520.

The previous prime is 261972609001. The next prime is 261972609089. The reversal of 261972609032 is 230906279162.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22150094 + ... + 22161917.

It is an arithmetic number, because the mean of its divisors is an integer number (30741458325).

Almost surely, 2^261972609032 is an apocalyptic number.

It is an amenable number.

261972609032 is a deficient number, since it is larger than the sum of its proper divisors (229890724168).

261972609032 is a wasteful number, since it uses less digits than its factorization.

261972609032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44312756 (or 44312752 counting only the distinct ones).

The product of its (nonzero) digits is 489888, while the sum is 47.

The spelling of 261972609032 in words is "two hundred sixty-one billion, nine hundred seventy-two million, six hundred nine thousand, thirty-two".