139271781532 has 24 divisors (see below), whose sum is σ = 262497467232. Its totient is φ = 64273473600.

The previous prime is 139271781469. The next prime is 139271781533. The reversal of 139271781532 is 235187172931.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139271781533) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 489057 + ... + 719527.

It is an arithmetic number, because the mean of its divisors is an integer number (10937394468).

Almost surely, 2^139271781532 is an apocalyptic number.

It is an amenable number.

139271781532 is a deficient number, since it is larger than the sum of its proper divisors (123225685700).

139271781532 is a wasteful number, since it uses less digits than its factorization.

139271781532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242109 (or 242107 counting only the distinct ones).

The product of its digits is 635040, while the sum is 49.

The spelling of 139271781532 in words is "one hundred thirty-nine billion, two hundred seventy-one million, seven hundred eighty-one thousand, five hundred thirty-two".