261615551314 has 16 divisors (see below), whose sum is σ = 422789592960. Its totient is φ = 120694251600.

The previous prime is 261615551299. The next prime is 261615551321. The reversal of 261615551314 is 413155516162.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2078844 + ... + 2201095.

It is an arithmetic number, because the mean of its divisors is an integer number (26424349560).

Almost surely, 2^261615551314 is an apocalyptic number.

261615551314 is a deficient number, since it is larger than the sum of its proper divisors (161174041646).

261615551314 is a wasteful number, since it uses less digits than its factorization.

261615551314 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4282305.

The product of its digits is 108000, while the sum is 40.

The spelling of 261615551314 in words is "two hundred sixty-one billion, six hundred fifteen million, five hundred fifty-one thousand, three hundred fourteen".