261422572214364 has 48 divisors (see below), whose sum is σ = 665470381570176. Its totient is φ = 79215258081600.

The previous prime is 261422572214359. The next prime is 261422572214491. The reversal of 261422572214364 is 463412275224162.

It is a super-2 number, since 2×261422572214364² (a number of 30 digits) contains 22 as substring.

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, 43454842 + ... + 49103649.

It is an arithmetic number, because the mean of its divisors is an integer number (13863966282712).

Almost surely, 2^{261422572214364} is an apocalyptic number.

It is an amenable number.

261422572214364 is an abundant number, since it is smaller than the sum of its proper divisors (404047809355812).

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

261422572214364 is a wasteful number, since it uses less digits than its factorization.

261422572214364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92579906 (or 92579904 counting only the distinct ones).

The product of its digits is 7741440, while the sum is 51.

The spelling of 261422572214364 in words is "two hundred sixty-one trillion, four hundred twenty-two billion, five hundred seventy-two million, two hundred fourteen thousand, three hundred sixty-four".