10139430640 has 20 divisors (see below), whose sum is σ = 23574176424. Its totient is φ = 4055772224.

The previous prime is 10139430619. The next prime is 10139430641. The reversal of 10139430640 is 4603493101.

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10139430641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63371362 + ... + 63371521.

Almost surely, 2^10139430640 is an apocalyptic number.

10139430640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10139430640 is an abundant number, since it is smaller than the sum of its proper divisors (13434745784).

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

10139430640 is a wasteful number, since it uses less digits than its factorization.

10139430640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126742896 (or 126742890 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 31.

The spelling of 10139430640 in words is "ten billion, one hundred thirty-nine million, four hundred thirty thousand, six hundred forty".