265456666550 has 96 divisors (see below), whose sum is σ = 515707492608. Its totient is φ = 101570152320.

The previous prime is 265456666547. The next prime is 265456666567. The reversal of 265456666550 is 55666654562.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 73268039 + ... + 73271661.

It is an arithmetic number, because the mean of its divisors is an integer number (5371953048).

Almost surely, 2^265456666550 is an apocalyptic number.

265456666550 is a deficient number, since it is larger than the sum of its proper divisors (250250826058).

265456666550 is a wasteful number, since it uses less digits than its factorization.

265456666550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4374 (or 4369 counting only the distinct ones).

The product of its (nonzero) digits is 38880000, while the sum is 56.

The spelling of 265456666550 in words is "two hundred sixty-five billion, four hundred fifty-six million, six hundred sixty-six thousand, five hundred fifty".