72670958138 has 8 divisors (see below), whose sum is σ = 109298680788. Its totient is φ = 36238064544.

The previous prime is 72670958117. The next prime is 72670958141. The reversal of 72670958138 is 83185907627.

It can be written as a sum of positive squares in 2 ways, for example, as 72601685809 + 69272329 = 269447^2 + 8323^2 .

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

It is a super-3 number, since 3×72670958138³ (a number of 34 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48706331 + ... + 48707822.

Almost surely, 2^72670958138 is an apocalyptic number.

72670958138 is a deficient number, since it is larger than the sum of its proper divisors (36627722650).

72670958138 is a wasteful number, since it uses less digits than its factorization.

72670958138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97414528.

The product of its (nonzero) digits is 5080320, while the sum is 56.

The spelling of 72670958138 in words is "seventy-two billion, six hundred seventy million, nine hundred fifty-eight thousand, one hundred thirty-eight".