15247817012 has 6 divisors (see below), whose sum is σ = 26683679778. Its totient is φ = 7623908504.

The previous prime is 15247817009. The next prime is 15247817017. The reversal of 15247817012 is 21071874251.

It can be written as a sum of positive squares in only one way, i.e., 14641968016 + 605848996 = 121004^2 + 24614^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15247817017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1905977123 + ... + 1905977130.

It is an arithmetic number, because the mean of its divisors is an integer number (4447279963).

Almost surely, 2^15247817012 is an apocalyptic number.

It is an amenable number.

15247817012 is a deficient number, since it is larger than the sum of its proper divisors (11435862766).

15247817012 is a wasteful number, since it uses less digits than its factorization.

15247817012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3811954257 (or 3811954255 counting only the distinct ones).

The product of its (nonzero) digits is 31360, while the sum is 38.

The spelling of 15247817012 in words is "fifteen billion, two hundred forty-seven million, eight hundred seventeen thousand, twelve".