139647493870 has 16 divisors (see below), whose sum is σ = 251555797008. Its totient is φ = 55816706880.

The previous prime is 139647493849. The next prime is 139647493873. The reversal of 139647493870 is 78394746931.

It is a junction number, because it is equal to n+sod(n) for n = 139647493799 and 139647493808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139647493873) 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, 5272464 + ... + 5298883.

It is an arithmetic number, because the mean of its divisors is an integer number (15722237313).

Almost surely, 2^139647493870 is an apocalyptic number.

139647493870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

139647493870 is a deficient number, since it is larger than the sum of its proper divisors (111908303138).

139647493870 is a wasteful number, since it uses less digits than its factorization.

139647493870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10572675.

The product of its (nonzero) digits is 27433728, while the sum is 61.

The spelling of 139647493870 in words is "one hundred thirty-nine billion, six hundred forty-seven million, four hundred ninety-three thousand, eight hundred seventy".