139800993747 has 32 divisors (see below), whose sum is σ = 191384078400. Its totient is φ = 90737687040.

The previous prime is 139800993719. The next prime is 139800993749. The reversal of 139800993747 is 747399008931.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-139800993747 is a prime.

It is not an unprimeable number, because it can be changed into a prime (139800993749) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 30251097 + ... + 30255717.

It is an arithmetic number, because the mean of its divisors is an integer number (5980752450).

Almost surely, 2^139800993747 is an apocalyptic number.

139800993747 is a deficient number, since it is larger than the sum of its proper divisors (51583084653).

139800993747 is a wasteful number, since it uses less digits than its factorization.

139800993747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6103.

The product of its (nonzero) digits is 10287648, while the sum is 60.

The spelling of 139800993747 in words is "one hundred thirty-nine billion, eight hundred million, nine hundred ninety-three thousand, seven hundred forty-seven".