15231421454 has 16 divisors (see below), whose sum is σ = 22982578416. Its totient is φ = 7570680000.

The previous prime is 15231421433. The next prime is 15231421477. The reversal of 15231421454 is 45412413251.

15231421454 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 15231421454.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 232424 + ... + 290660.

It is an arithmetic number, because the mean of its divisors is an integer number (1436411151).

Almost surely, 2^15231421454 is an apocalyptic number.

15231421454 is a deficient number, since it is larger than the sum of its proper divisors (7751156962).

15231421454 is a wasteful number, since it uses less digits than its factorization.

15231421454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59011.

The product of its digits is 19200, while the sum is 32.

The spelling of 15231421454 in words is "fifteen billion, two hundred thirty-one million, four hundred twenty-one thousand, four hundred fifty-four".