261421121132714 has 32 divisors (see below), whose sum is σ = 421555714744320. Its totient is φ = 121195440073008.

The previous prime is 261421121132681. The next prime is 261421121132723. The reversal of 261421121132714 is 417231121124162.

It is a Harshad number since it is a multiple of its sum of digits (38).

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, 274795979 + ... + 275745665.

It is an arithmetic number, because the mean of its divisors is an integer number (13173616085760).

Almost surely, 2^{261421121132714} is an apocalyptic number.

261421121132714 is a deficient number, since it is larger than the sum of its proper divisors (160134593611606).

261421121132714 is a wasteful number, since it uses less digits than its factorization.

261421121132714 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1103882.

The product of its digits is 32256, while the sum is 38.

Adding to 261421121132714 its reverse (417231121124162), we get a palindrome (678652242256876).

The spelling of 261421121132714 in words is "two hundred sixty-one trillion, four hundred twenty-one billion, one hundred twenty-one million, one hundred thirty-two thousand, seven hundred fourteen".