264650545514551 has 4 divisors (see below), whose sum is σ = 302457766302352. Its totient is φ = 226843324726752.

The previous prime is 264650545514549. The next prime is 264650545514561. The reversal of 264650545514551 is 155415545056462.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 264650545514551 - 2¹ = 264650545514549 is a prime.

It is a super-2 number, since 2×264650545514551² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (264650545514561) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18903610393890 + ... + 18903610393903.

It is an arithmetic number, because the mean of its divisors is an integer number (75614441575588).

Almost surely, 2^{264650545514551} is an apocalyptic number.

264650545514551 is a deficient number, since it is larger than the sum of its proper divisors (37807220787801).

264650545514551 is an equidigital number, since it uses as much as digits as its factorization.

264650545514551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37807220787800.

The product of its (nonzero) digits is 72000000, while the sum is 58.

The spelling of 264650545514551 in words is "two hundred sixty-four trillion, six hundred fifty billion, five hundred forty-five million, five hundred fourteen thousand, five hundred fifty-one".