15631640142 has 8 divisors (see below), whose sum is σ = 31263280296. Its totient is φ = 5210546712.

The previous prime is 15631640111. The next prime is 15631640147. The reversal of 15631640142 is 24104613651.

It is a sphenic number, since it is the product of 3 distinct primes.

15631640142 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15631640147) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1302636673 + ... + 1302636684.

It is an arithmetic number, because the mean of its divisors is an integer number (3907910037).

Almost surely, 2^15631640142 is an apocalyptic number.

15631640142 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

15631640142 is a wasteful number, since it uses less digits than its factorization.

15631640142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2605273362.

The product of its (nonzero) digits is 17280, while the sum is 33.

The spelling of 15631640142 in words is "fifteen billion, six hundred thirty-one million, six hundred forty thousand, one hundred forty-two".