138004400771 has 8 divisors (see below), whose sum is σ = 139889330880. Its totient is φ = 136122921792.

The previous prime is 138004400761. The next prime is 138004400773. The reversal of 138004400771 is 177004400831.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 138004400771 - 2⁶ = 138004400707 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (138004400773) 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, 782210 + ... + 942263.

It is an arithmetic number, because the mean of its divisors is an integer number (17486166360).

Almost surely, 2^138004400771 is an apocalyptic number.

138004400771 is a deficient number, since it is larger than the sum of its proper divisors (1884930109).

138004400771 is a wasteful number, since it uses less digits than its factorization.

138004400771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1725565.

The product of its (nonzero) digits is 18816, while the sum is 35.

The spelling of 138004400771 in words is "one hundred thirty-eight billion, four million, four hundred thousand, seven hundred seventy-one".