261962374368 has 24 divisors (see below), whose sum is σ = 687651232968. Its totient is φ = 87320791424.

The previous prime is 261962374357. The next prime is 261962374379. The reversal of 261962374368 is 863473269162.

It is an interprime number because it is at equal distance from previous prime (261962374357) and next prime (261962374379).

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

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, 1364387271 + ... + 1364387462.

It is an arithmetic number, because the mean of its divisors is an integer number (28652134707).

Almost surely, 2^261962374368 is an apocalyptic number.

It is an amenable number.

261962374368 is an abundant number, since it is smaller than the sum of its proper divisors (425688858600).

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

261962374368 is a wasteful number, since it uses less digits than its factorization.

261962374368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2728774746 (or 2728774738 counting only the distinct ones).

The product of its digits is 15676416, while the sum is 57.

The spelling of 261962374368 in words is "two hundred sixty-one billion, nine hundred sixty-two million, three hundred seventy-four thousand, three hundred sixty-eight".