15630245772 has 12 divisors (see below), whose sum is σ = 36470573496. Its totient is φ = 5210081920.

The previous prime is 15630245749. The next prime is 15630245779. The reversal of 15630245772 is 27754203651.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (15630245779) 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, 651260229 + ... + 651260252.

It is an arithmetic number, because the mean of its divisors is an integer number (3039214458).

Almost surely, 2^15630245772 is an apocalyptic number.

15630245772 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

15630245772 is an abundant number, since it is smaller than the sum of its proper divisors (20840327724).

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

15630245772 is a wasteful number, since it uses less digits than its factorization.

15630245772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1302520488 (or 1302520486 counting only the distinct ones).

The product of its (nonzero) digits is 352800, while the sum is 42.

The spelling of 15630245772 in words is "fifteen billion, six hundred thirty million, two hundred forty-five thousand, seven hundred seventy-two".