139789984379840 has 56 divisors (see below), whose sum is σ = 344353345165440. Its totient is φ = 53987856032768.

The previous prime is 139789984379827. The next prime is 139789984379923. The reversal of 139789984379840 is 48973489987931.

It is a happy number.

It is a super-2 number, since 2×139789984379840² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7531778672 + ... + 7531797231.

Almost surely, 2^{139789984379840} is an apocalyptic number.

139789984379840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

139789984379840 is an abundant number, since it is smaller than the sum of its proper divisors (204563360785600).

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

139789984379840 is a wasteful number, since it uses less digits than its factorization.

139789984379840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15063575949 (or 15063575939 counting only the distinct ones).

The product of its (nonzero) digits is 23702740992, while the sum is 89.

The spelling of 139789984379840 in words is "one hundred thirty-nine trillion, seven hundred eighty-nine billion, nine hundred eighty-four million, three hundred seventy-nine thousand, eight hundred forty".