261476846388 has 48 divisors (see below), whose sum is σ = 717779583360. Its totient is φ = 82031951232.

The previous prime is 261476846383. The next prime is 261476846401. The reversal of 261476846388 is 883648674162.

261476846388 is a `hidden beast` number, since 2 + 6 + 1 + 476 + 84 + 6 + 3 + 88 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (261476846381) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71206456 + ... + 71210127.

It is an arithmetic number, because the mean of its divisors is an integer number (14953741320).

Almost surely, 2^261476846388 is an apocalyptic number.

It is an amenable number.

261476846388 is an abundant number, since it is smaller than the sum of its proper divisors (456302736972).

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

261476846388 is a wasteful number, since it uses less digits than its factorization.

261476846388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142416613 (or 142416605 counting only the distinct ones).

The product of its digits is 74317824, while the sum is 63.

The spelling of 261476846388 in words is "two hundred sixty-one billion, four hundred seventy-six million, eight hundred forty-six thousand, three hundred eighty-eight".