3992457038561 has 32 divisors (see below), whose sum is σ = 4546187856000. Its totient is φ = 3483550236672.

The previous prime is 3992457038483. The next prime is 3992457038567. The reversal of 3992457038561 is 1658307542993.

It is a cyclic number.

It is not a de Polignac number, because 3992457038561 - 2¹⁰ = 3992457037537 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 3992457038494 and 3992457038503.

It is not an unprimeable number, because it can be changed into a prime (3992457038567) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2072570 + ... + 3504348.

It is an arithmetic number, because the mean of its divisors is an integer number (142068370500).

It is a 1-persistent number, because it is pandigital, but 2⋅3992457038561 = 7984914077122 is not.

Almost surely, 2^{3992457038561} is an apocalyptic number.

It is an amenable number.

3992457038561 is a deficient number, since it is larger than the sum of its proper divisors (553730817439).

3992457038561 is a wasteful number, since it uses less digits than its factorization.

3992457038561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1432001.

The product of its (nonzero) digits is 48988800, while the sum is 62.

The spelling of 3992457038561 in words is "three trillion, nine hundred ninety-two billion, four hundred fifty-seven million, thirty-eight thousand, five hundred sixty-one".