42638970318 has 16 divisors (see below), whose sum is σ = 97460503680. Its totient is φ = 12182562936.

The previous prime is 42638970301. The next prime is 42638970329. The reversal of 42638970318 is 81307983624.

It is a super-2 number, since 2×42638970318² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 507606748 + ... + 507606831.

It is an arithmetic number, because the mean of its divisors is an integer number (6091281480).

Almost surely, 2^42638970318 is an apocalyptic number.

42638970318 is an abundant number, since it is smaller than the sum of its proper divisors (54821533362).

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

42638970318 is a wasteful number, since it uses less digits than its factorization.

42638970318 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1015213591.

The product of its (nonzero) digits is 1741824, while the sum is 51.

The spelling of 42638970318 in words is "forty-two billion, six hundred thirty-eight million, nine hundred seventy thousand, three hundred eighteen".