139935771840 has 112 divisors (see below), whose sum is σ = 444847736160. Its totient is φ = 37269872640.

The previous prime is 139935771821. The next prime is 139935771851. The reversal of 139935771840 is 48177539931.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 686550 + ... + 866730.

Almost surely, 2^139935771840 is an apocalyptic number.

139935771840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 139935771840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (222423868080).

139935771840 is an abundant number, since it is smaller than the sum of its proper divisors (304911964320).

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

139935771840 is a wasteful number, since it uses less digits than its factorization.

139935771840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181010 (or 181000 counting only the distinct ones).

The product of its (nonzero) digits is 5715360, while the sum is 57.

The spelling of 139935771840 in words is "one hundred thirty-nine billion, nine hundred thirty-five million, seven hundred seventy-one thousand, eight hundred forty".