138375661058 has 8 divisors (see below), whose sum is σ = 210661454352. Its totient is φ = 68155176276.

The previous prime is 138375661057. The next prime is 138375661069. The reversal of 138375661058 is 850166573831.

It is a happy number.

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

It is not an unprimeable number, because it can be changed into a prime (138375661057) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 516326960 + ... + 516327227.

It is an arithmetic number, because the mean of its divisors is an integer number (26332681794).

Almost surely, 2^138375661058 is an apocalyptic number.

138375661058 is a deficient number, since it is larger than the sum of its proper divisors (72285793294).

138375661058 is a wasteful number, since it uses less digits than its factorization.

138375661058 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1032654256.

The product of its (nonzero) digits is 3628800, while the sum is 53.

The spelling of 138375661058 in words is "one hundred thirty-eight billion, three hundred seventy-five million, six hundred sixty-one thousand, fifty-eight".