261562732313464 has 32 divisors (see below), whose sum is σ = 501841605450240. Its totient is φ = 127738378504800.

The previous prime is 261562732313461. The next prime is 261562732313503. The reversal of 261562732313464 is 464313237265162.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (261562732313461) 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, 23808159 + ... + 33014449.

It is an arithmetic number, because the mean of its divisors is an integer number (15682550170320).

Almost surely, 2^{261562732313464} is an apocalyptic number.

It is an amenable number.

261562732313464 is a deficient number, since it is larger than the sum of its proper divisors (240278873136776).

261562732313464 is a wasteful number, since it uses less digits than its factorization.

261562732313464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9288931 (or 9288927 counting only the distinct ones).

The product of its digits is 26127360, while the sum is 55.

The spelling of 261562732313464 in words is "two hundred sixty-one trillion, five hundred sixty-two billion, seven hundred thirty-two million, three hundred thirteen thousand, four hundred sixty-four".