261324273462 has 48 divisors (see below), whose sum is σ = 643742400240. Its totient is φ = 70272072192.

The previous prime is 261324273449. The next prime is 261324273467. The reversal of 261324273462 is 264372423162.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (261324273467) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 26137887 + ... + 26147882.

It is an arithmetic number, because the mean of its divisors is an integer number (13411300005).

Almost surely, 2^261324273462 is an apocalyptic number.

261324273462 is an abundant number, since it is smaller than the sum of its proper divisors (382418126778).

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

261324273462 is a wasteful number, since it uses less digits than its factorization.

261324273462 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52285805 (or 52285798 counting only the distinct ones).

The product of its digits is 580608, while the sum is 42.

The spelling of 261324273462 in words is "two hundred sixty-one billion, three hundred twenty-four million, two hundred seventy-three thousand, four hundred sixty-two".