261015496 has 32 divisors (see below), whose sum is σ = 561810240. Its totient is φ = 111365568.

The previous prime is 261015449. The next prime is 261015497. The reversal of 261015496 is 694510162.

It is not an unprimeable number, because it can be changed into a prime (261015497) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2446 + ... + 22978.

It is an arithmetic number, because the mean of its divisors is an integer number (17556570).

Almost surely, 2^261015496 is an apocalyptic number.

It is an amenable number.

261015496 is an abundant number, since it is smaller than the sum of its proper divisors (300794744).

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

261015496 is a wasteful number, since it uses less digits than its factorization.

261015496 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20773 (or 20769 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 261015496 is about 16155.9740034453. The cubic root of 261015496 is about 639.0803000894.

The spelling of 261015496 in words is "two hundred sixty-one million, fifteen thousand, four hundred ninety-six".