42156265913 has 4 divisors (see below), whose sum is σ = 42175096320. Its totient is φ = 42137435508.

The previous prime is 42156265909. The next prime is 42156265981. The reversal of 42156265913 is 31956265124.

42156265913 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 42156265913 - 2² = 42156265909 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (42156765913) 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, 9411845 + ... + 9416322.

It is an arithmetic number, because the mean of its divisors is an integer number (10543774080).

Almost surely, 2^42156265913 is an apocalyptic number.

It is an amenable number.

42156265913 is a deficient number, since it is larger than the sum of its proper divisors (18830407).

42156265913 is a wasteful number, since it uses less digits than its factorization.

42156265913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18830406.

The product of its digits is 388800, while the sum is 44.

The spelling of 42156265913 in words is "forty-two billion, one hundred fifty-six million, two hundred sixty-five thousand, nine hundred thirteen".