60139920538 has 8 divisors (see below), whose sum is σ = 90219258900. Its totient is φ = 30066834240.

The previous prime is 60139920523. The next prime is 60139920539. The reversal of 60139920538 is 83502993106.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 58848452569 + 1291467969 = 242587^2 + 35937^2 .

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 (60139920539) 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, 1538893 + ... + 1577488.

Almost surely, 2^60139920538 is an apocalyptic number.

60139920538 is a deficient number, since it is larger than the sum of its proper divisors (30079338362).

60139920538 is a wasteful number, since it uses less digits than its factorization.

60139920538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3126032.

The product of its (nonzero) digits is 349920, while the sum is 46.

The spelling of 60139920538 in words is "sixty billion, one hundred thirty-nine million, nine hundred twenty thousand, five hundred thirty-eight".