2053390957681 has 16 divisors (see below), whose sum is σ = 2615553279360. Its totient is φ = 1569331964160.

The previous prime is 2053390957661. The next prime is 2053390957687. The reversal of 2053390957681 is 1867590933502.

It is a cyclic number.

It is not a de Polignac number, because 2053390957681 - 2¹⁵ = 2053390924913 is a prime.

It is a super-2 number, since 2×2053390957681² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2053390957687) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 454086850 + ... + 454091371.

It is an arithmetic number, because the mean of its divisors is an integer number (163472079960).

Almost surely, 2^{2053390957681} is an apocalyptic number.

It is an amenable number.

2053390957681 is a deficient number, since it is larger than the sum of its proper divisors (562162321679).

2053390957681 is a wasteful number, since it uses less digits than its factorization.

2053390957681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 908178264.

The product of its (nonzero) digits is 12247200, while the sum is 58.

The spelling of 2053390957681 in words is "two trillion, fifty-three billion, three hundred ninety million, nine hundred fifty-seven thousand, six hundred eighty-one".