261592615016 has 16 divisors (see below), whose sum is σ = 490496834400. Its totient is φ = 130793459184.

The previous prime is 261592614979. The next prime is 261592615019. The reversal of 261592615016 is 610516295162.

It is a super-3 number, since 3×261592615016³ (a number of 35 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (261592615019) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63341 + ... + 726083.

It is an arithmetic number, because the mean of its divisors is an integer number (30656052150).

Almost surely, 2^261592615016 is an apocalyptic number.

It is an amenable number.

261592615016 is a deficient number, since it is larger than the sum of its proper divisors (228904219384).

261592615016 is a wasteful number, since it uses less digits than its factorization.

261592615016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 712088 (or 712084 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 44.

The spelling of 261592615016 in words is "two hundred sixty-one billion, five hundred ninety-two million, six hundred fifteen thousand, sixteen".