42437664387 has 24 divisors (see below), whose sum is σ = 61490203008. Its totient is φ = 28203552000.

The previous prime is 42437664371. The next prime is 42437664391. The reversal of 42437664387 is 78346673424.

It is not a de Polignac number, because 42437664387 - 2⁴ = 42437664371 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42437664317) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8446158 + ... + 8451180.

It is an arithmetic number, because the mean of its divisors is an integer number (2562091792).

Almost surely, 2^42437664387 is an apocalyptic number.

42437664387 is a deficient number, since it is larger than the sum of its proper divisors (19052538621).

42437664387 is a wasteful number, since it uses less digits than its factorization.

42437664387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7771 (or 7768 counting only the distinct ones).

The product of its digits is 16257024, while the sum is 54.

The spelling of 42437664387 in words is "forty-two billion, four hundred thirty-seven million, six hundred sixty-four thousand, three hundred eighty-seven".