1057070638957 has 8 divisors (see below), whose sum is σ = 1119320019000. Its totient is φ = 994828898304.

The previous prime is 1057070638909. The next prime is 1057070639021. The reversal of 1057070638957 is 7598360707501.

It can be written as a sum of positive squares in 4 ways, for example, as 329207422756 + 727863216201 = 573766^2 + 853149^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 1057070638957 - 2³¹ = 1054923155309 is a prime.

It is a super-2 number, since 2×1057070638957² (a number of 25 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 (1057070638457) 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, 1623732 + ... + 2179597.

It is an arithmetic number, because the mean of its divisors is an integer number (139915002375).

Almost surely, 2^{1057070638957} is an apocalyptic number.

1057070638957 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

1057070638957 is a deficient number, since it is larger than the sum of its proper divisors (62249380043).

1057070638957 is a wasteful number, since it uses less digits than its factorization.

1057070638957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3819695.

The product of its (nonzero) digits is 11113200, while the sum is 58.

The spelling of 1057070638957 in words is "one trillion, fifty-seven billion, seventy million, six hundred thirty-eight thousand, nine hundred fifty-seven".