139249057780 has 48 divisors (see below), whose sum is σ = 348728083200. Its totient is φ = 45666770688.

The previous prime is 139249057733. The next prime is 139249057781. The reversal of 139249057780 is 87750942931.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139249057781) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21619305 + ... + 21625744.

It is an arithmetic number, because the mean of its divisors is an integer number (7265168400).

Almost surely, 2^139249057780 is an apocalyptic number.

139249057780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

139249057780 is an abundant number, since it is smaller than the sum of its proper divisors (209479025420).

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

139249057780 is a wasteful number, since it uses less digits than its factorization.

139249057780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43245088 (or 43245086 counting only the distinct ones).

The product of its (nonzero) digits is 3810240, while the sum is 55.

The spelling of 139249057780 in words is "one hundred thirty-nine billion, two hundred forty-nine million, fifty-seven thousand, seven hundred eighty".