42645761279 has 16 divisors (see below), whose sum is σ = 47670971040. Its totient is φ = 37812480000.

The previous prime is 42645761237. The next prime is 42645761311. The reversal of 42645761279 is 97216754624.

It is a cyclic number.

It is not a de Polignac number, because 42645761279 - 2⁸ = 42645761023 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42645761279.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42645761219) 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, 1850729 + ... + 1873629.

It is an arithmetic number, because the mean of its divisors is an integer number (2979435690).

Almost surely, 2^42645761279 is an apocalyptic number.

42645761279 is a deficient number, since it is larger than the sum of its proper divisors (5025209761).

42645761279 is a wasteful number, since it uses less digits than its factorization.

42645761279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27082.

The product of its digits is 5080320, while the sum is 53.

The spelling of 42645761279 in words is "forty-two billion, six hundred forty-five million, seven hundred sixty-one thousand, two hundred seventy-nine".