57276266721 has 8 divisors (see below), whose sum is σ = 77044182240. Its totient is φ = 37846264512.

The previous prime is 57276266699. The next prime is 57276266767. The reversal of 57276266721 is 12766267275.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 57276266721 - 2¹⁵ = 57276233953 is a prime.

It is not an unprimeable number, because it can be changed into a prime (57276266521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 84477931 + ... + 84478608.

It is an arithmetic number, because the mean of its divisors is an integer number (9630522780).

Almost surely, 2^57276266721 is an apocalyptic number.

It is an amenable number.

57276266721 is a deficient number, since it is larger than the sum of its proper divisors (19767915519).

57276266721 is a wasteful number, since it uses less digits than its factorization.

57276266721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168956655.

The product of its digits is 2963520, while the sum is 51.

The spelling of 57276266721 in words is "fifty-seven billion, two hundred seventy-six million, two hundred sixty-six thousand, seven hundred twenty-one".