40467807638 has 4 divisors (see below), whose sum is σ = 60701711460. Its totient is φ = 20233903818.

The previous prime is 40467807613. The next prime is 40467807649. The reversal of 40467807638 is 83670876404.

40467807638 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.

It is a super-2 number, since 2×40467807638² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 40467807638.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10116951908 + ... + 10116951911.

It is an arithmetic number, because the mean of its divisors is an integer number (15175427865).

Almost surely, 2^40467807638 is an apocalyptic number.

40467807638 is a deficient number, since it is larger than the sum of its proper divisors (20233903822).

40467807638 is a wasteful number, since it uses less digits than its factorization.

40467807638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20233903821.

The product of its (nonzero) digits is 5419008, while the sum is 53.

The spelling of 40467807638 in words is "forty billion, four hundred sixty-seven million, eight hundred seven thousand, six hundred thirty-eight".