15495640048 has 30 divisors (see below), whose sum is σ = 34924486416. Its totient is φ = 6640988256.

The previous prime is 15495640031. The next prime is 15495640049. The reversal of 15495640048 is 84004659451.

It is a happy number.

It is a super-2 number, since 2×15495640048² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15495640049) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9881640 + ... + 9883207.

Almost surely, 2^15495640048 is an apocalyptic number.

It is an amenable number.

15495640048 is an abundant number, since it is smaller than the sum of its proper divisors (19428846368).

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

15495640048 is a wasteful number, since it uses less digits than its factorization.

15495640048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19764869 (or 19764856 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 46.

The spelling of 15495640048 in words is "fifteen billion, four hundred ninety-five million, six hundred forty thousand, forty-eight".