42455913657 has 4 divisors (see below), whose sum is σ = 56607884880. Its totient is φ = 28303942436.

The previous prime is 42455913637. The next prime is 42455913683. The reversal of 42455913657 is 75631955424.

42455913657 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 42455913657 - 2⁷ = 42455913529 is a prime.

It is a super-2 number, since 2×42455913657² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (42455913637) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7075985607 + ... + 7075985612.

It is an arithmetic number, because the mean of its divisors is an integer number (14151971220).

Almost surely, 2^42455913657 is an apocalyptic number.

It is an amenable number.

42455913657 is a deficient number, since it is larger than the sum of its proper divisors (14151971223).

42455913657 is a wasteful number, since it uses less digits than its factorization.

42455913657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14151971222.

The product of its digits is 4536000, while the sum is 51.

The spelling of 42455913657 in words is "forty-two billion, four hundred fifty-five million, nine hundred thirteen thousand, six hundred fifty-seven".