261414066534 has 16 divisors (see below), whose sum is σ = 532692815472. Its totient is φ = 85493908448.

The previous prime is 261414066523. The next prime is 261414066559. The reversal of 261414066534 is 435660414162.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 411028089 + ... + 411028724.

It is an arithmetic number, because the mean of its divisors is an integer number (33293300967).

Almost surely, 2^261414066534 is an apocalyptic number.

261414066534 is an abundant number, since it is smaller than the sum of its proper divisors (271278748938).

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

261414066534 is a wasteful number, since it uses less digits than its factorization.

261414066534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 822056871.

The product of its (nonzero) digits is 414720, while the sum is 42.

The spelling of 261414066534 in words is "two hundred sixty-one billion, four hundred fourteen million, sixty-six thousand, five hundred thirty-four".