42438997464 has 64 divisors (see below), whose sum is σ = 106900992000. Its totient is φ = 14039546880.

The previous prime is 42438997463. The next prime is 42438997477. The reversal of 42438997464 is 46479983424.

It is a junction number, because it is equal to n+sod(n) for n = 42438997398 and 42438997407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42438997463) 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, 2001832 + ... + 2022920.

It is an arithmetic number, because the mean of its divisors is an integer number (1670328000).

Almost surely, 2^42438997464 is an apocalyptic number.

It is an amenable number.

42438997464 is an abundant number, since it is smaller than the sum of its proper divisors (64461994536).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42438997464 is a wasteful number, since it uses less digits than its factorization.

42438997464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21728 (or 21724 counting only the distinct ones).

The product of its digits is 41803776, while the sum is 60.

The spelling of 42438997464 in words is "forty-two billion, four hundred thirty-eight million, nine hundred ninety-seven thousand, four hundred sixty-four".