1057539693992 has 8 divisors (see below), whose sum is σ = 1982886926250. Its totient is φ = 528769846992.

The previous prime is 1057539693949. The next prime is 1057539693997. The reversal of 1057539693992 is 2993969357501.

It can be written as a sum of positive squares in only one way, i.e., 945417850276 + 112121843716 = 972326^2 + 334846^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×1057539693992² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1057539693997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66096230867 + ... + 66096230882.

Almost surely, 2^{1057539693992} is an apocalyptic number.

It is an amenable number.

1057539693992 is a deficient number, since it is larger than the sum of its proper divisors (925347232258).

1057539693992 is a wasteful number, since it uses less digits than its factorization.

1057539693992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132192461755 (or 132192461751 counting only the distinct ones).

The product of its (nonzero) digits is 124002900, while the sum is 68.

The spelling of 1057539693992 in words is "one trillion, fifty-seven billion, five hundred thirty-nine million, six hundred ninety-three thousand, nine hundred ninety-two".