261239425362 has 96 divisors (see below), whose sum is σ = 581999468544. Its totient is φ = 84648261600.

The previous prime is 261239425361. The next prime is 261239425411. The reversal of 261239425362 is 263524932162.

261239425362 is a `hidden beast` number, since 2 + 6 + 1 + 2 + 394 + 253 + 6 + 2 = 666.

It is not an unprimeable number, because it can be changed into a prime (261239425361) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 108351937 + ... + 108354347.

It is an arithmetic number, because the mean of its divisors is an integer number (6062494464).

Almost surely, 2^261239425362 is an apocalyptic number.

261239425362 is an abundant number, since it is smaller than the sum of its proper divisors (320760043182).

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

261239425362 is a wasteful number, since it uses less digits than its factorization.

261239425362 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3284 (or 3281 counting only the distinct ones).

The product of its digits is 933120, while the sum is 45.

The spelling of 261239425362 in words is "two hundred sixty-one billion, two hundred thirty-nine million, four hundred twenty-five thousand, three hundred sixty-two".