261421052535414 has 48 divisors (see below), whose sum is σ = 570567238078032. Its totient is φ = 86501172447744.

The previous prime is 261421052535397. The next prime is 261421052535451. The reversal of 261421052535414 is 414535250124162.

261421052535414 is a `hidden beast` number, since 2 + 6 + 1 + 4 + 2 + 1 + 0 + 52 + 53 + 541 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 261421052535414.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 67035877 + ... + 70828319.

It is an arithmetic number, because the mean of its divisors is an integer number (11886817459959).

Almost surely, 2^{261421052535414} is an apocalyptic number.

261421052535414 is an abundant number, since it is smaller than the sum of its proper divisors (309146185542618).

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

261421052535414 is a wasteful number, since it uses less digits than its factorization.

261421052535414 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3820541 (or 3820538 counting only the distinct ones).

The product of its (nonzero) digits is 1152000, while the sum is 45.

The spelling of 261421052535414 in words is "two hundred sixty-one trillion, four hundred twenty-one billion, fifty-two million, five hundred thirty-five thousand, four hundred fourteen".