139647538020 has 96 divisors (see below), whose sum is σ = 418033744128. Its totient is φ = 34708488192.

The previous prime is 139647538013. The next prime is 139647538057. The reversal of 139647538020 is 20835746931.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 559549 + ... + 769668.

It is an arithmetic number, because the mean of its divisors is an integer number (4354518168).

It is a 1-persistent number, because it is pandigital, but 2⋅139647538020 = 279295076040 is not.

Almost surely, 2^139647538020 is an apocalyptic number.

139647538020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

139647538020 is an abundant number, since it is smaller than the sum of its proper divisors (278386206108).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

139647538020 is a wasteful number, since it uses less digits than its factorization.

139647538020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1329349 (or 1329347 counting only the distinct ones).

The product of its (nonzero) digits is 1088640, while the sum is 48.

The spelling of 139647538020 in words is "one hundred thirty-nine billion, six hundred forty-seven million, five hundred thirty-eight thousand, twenty".