57445682644690 has 16 divisors (see below), whose sum is σ = 103405136162328. Its totient is φ = 22977626968576.

The previous prime is 57445682644633. The next prime is 57445682644703. The reversal of 57445682644690 is 9644628654475.

It can be written as a sum of positive squares in 4 ways, for example, as 46926240174529 + 10519442470161 = 6850273^2 + 3243369^2 .

It is a super-2 number, since 2×57445682644690² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80387647 + ... + 81099106.

Almost surely, 2^{57445682644690} is an apocalyptic number.

57445682644690 is a deficient number, since it is larger than the sum of its proper divisors (45959453517638).

57445682644690 is a wasteful number, since it uses less digits than its factorization.

57445682644690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161522333.

The product of its (nonzero) digits is 1393459200, while the sum is 70.

The spelling of 57445682644690 in words is "fifty-seven trillion, four hundred forty-five billion, six hundred eighty-two million, six hundred forty-four thousand, six hundred ninety".