139531667772 has 384 divisors, whose sum is σ = 411844608000. Its totient is φ = 35884062720.

The previous prime is 139531667749. The next prime is 139531667879. The reversal of 139531667772 is 277766135931.

It is a super-2 number, since 2×139531667772² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 730532197 + ... + 730532387.

It is an arithmetic number, because the mean of its divisors is an integer number (1072512000).

Almost surely, 2^139531667772 is an apocalyptic number.

139531667772 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 139531667772, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (205922304000).

139531667772 is an abundant number, since it is smaller than the sum of its proper divisors (272312940228).

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

139531667772 is a wasteful number, since it uses less digits than its factorization.

139531667772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 489 (or 487 counting only the distinct ones).

The product of its digits is 10001880, while the sum is 57.

The spelling of 139531667772 in words is "one hundred thirty-nine billion, five hundred thirty-one million, six hundred sixty-seven thousand, seven hundred seventy-two".