15284661478 has 12 divisors (see below), whose sum is σ = 24354971892. Its totient is φ = 7192781600.

The previous prime is 15284661451. The next prime is 15284661479. The reversal of 15284661478 is 87416648251.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15284661479) 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, 13221448 + ... + 13222603.

It is an arithmetic number, because the mean of its divisors is an integer number (2029580991).

Almost surely, 2^15284661478 is an apocalyptic number.

15284661478 is a deficient number, since it is larger than the sum of its proper divisors (9070310414).

15284661478 is a wasteful number, since it uses less digits than its factorization.

15284661478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26444087 (or 26444070 counting only the distinct ones).

The product of its digits is 2580480, while the sum is 52.

The spelling of 15284661478 in words is "fifteen billion, two hundred eighty-four million, six hundred sixty-one thousand, four hundred seventy-eight".