57123044639 has 2 divisors, whose sum is σ = 57123044640. Its totient is φ = 57123044638.

The previous prime is 57123044621. The next prime is 57123044681. The reversal of 57123044639 is 93644032175.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 57123044639 - 2¹² = 57123040543 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 57123044639.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57123244639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28561522319 + 28561522320.

It is an arithmetic number, because the mean of its divisors is an integer number (28561522320).

Almost surely, 2^57123044639 is an apocalyptic number.

57123044639 is a deficient number, since it is larger than the sum of its proper divisors (1).

57123044639 is an equidigital number, since it uses as much as digits as its factorization.

57123044639 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 544320, while the sum is 44.

The spelling of 57123044639 in words is "fifty-seven billion, one hundred twenty-three million, forty-four thousand, six hundred thirty-nine".