164051426638 has 16 divisors (see below), whose sum is σ = 268456763520. Its totient is φ = 74566337400.

The previous prime is 164051426633. The next prime is 164051426683. The reversal of 164051426638 is 836624150461.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164051426633) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 657433 + ... + 871963.

It is an arithmetic number, because the mean of its divisors is an integer number (16778547720).

Almost surely, 2^164051426638 is an apocalyptic number.

164051426638 is a deficient number, since it is larger than the sum of its proper divisors (104405336882).

164051426638 is a wasteful number, since it uses less digits than its factorization.

164051426638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249303.

The product of its (nonzero) digits is 829440, while the sum is 46.

The spelling of 164051426638 in words is "one hundred sixty-four billion, fifty-one million, four hundred twenty-six thousand, six hundred thirty-eight".