261250266052 has 12 divisors (see below), whose sum is σ = 463627233216. Its totient is φ = 128785342280.

The previous prime is 261250266023. The next prime is 261250266089. The reversal of 261250266052 is 250662052162.

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, 459947368 + ... + 459947935.

It is an arithmetic number, because the mean of its divisors is an integer number (38635602768).

Almost surely, 2^261250266052 is an apocalyptic number.

It is an amenable number.

261250266052 is a deficient number, since it is larger than the sum of its proper divisors (202376967164).

261250266052 is a wasteful number, since it uses less digits than its factorization.

261250266052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 919895378 (or 919895376 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 37.

The spelling of 261250266052 in words is "two hundred sixty-one billion, two hundred fifty million, two hundred sixty-six thousand, fifty-two".