139681677312 has 150 divisors (see below), whose sum is σ = 417311795978. Its totient is φ = 46560116736.

The previous prime is 139681677287. The next prime is 139681677323. The reversal of 139681677312 is 213776186931.

It can be written as a sum of positive squares in only one way, i.e., 87653892096 + 52027785216 = 296064^2 + 228096^2 .

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 1274478 + ... + 1379730.

Almost surely, 2^139681677312 is an apocalyptic number.

139681677312 is a gapful number since it is divisible by the number (12) 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 139681677312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (208655897989).

139681677312 is an abundant number, since it is smaller than the sum of its proper divisors (277630118666).

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

139681677312 is an frugal number, since it uses more digits than its factorization.

139681677312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105293 (or 105258 counting only the distinct ones).

The product of its digits is 2286144, while the sum is 54.

The spelling of 139681677312 in words is "one hundred thirty-nine billion, six hundred eighty-one million, six hundred seventy-seven thousand, three hundred twelve".