261675324760440 has 64 divisors (see below), whose sum is σ = 786319262760960. Its totient is φ = 69665127626880.

The previous prime is 261675324760439. The next prime is 261675324760501. The reversal of 261675324760440 is 44067423576162.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1796160856 + ... + 1796306535.

It is an arithmetic number, because the mean of its divisors is an integer number (12286238480640).

Almost surely, 2^{261675324760440} is an apocalyptic number.

261675324760440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

261675324760440 is an abundant number, since it is smaller than the sum of its proper divisors (524643938000520).

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

261675324760440 is a wasteful number, since it uses less digits than its factorization.

261675324760440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3592468012 (or 3592468008 counting only the distinct ones).

The product of its (nonzero) digits is 40642560, while the sum is 57.

The spelling of 261675324760440 in words is "two hundred sixty-one trillion, six hundred seventy-five billion, three hundred twenty-four million, seven hundred sixty thousand, four hundred forty".