15321400023 has 8 divisors (see below), whose sum is σ = 20674660608. Its totient is φ = 10091203064.

The previous prime is 15321400019. The next prime is 15321400079. The reversal of 15321400023 is 32000412351.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 15321400023 - 2² = 15321400019 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15321400013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30765615 + ... + 30766112.

It is an arithmetic number, because the mean of its divisors is an integer number (2584332576).

Almost surely, 2^15321400023 is an apocalyptic number.

15321400023 is a deficient number, since it is larger than the sum of its proper divisors (5353260585).

15321400023 is an equidigital number, since it uses as much as digits as its factorization.

15321400023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61531813.

The product of its (nonzero) digits is 720, while the sum is 21.

Adding to 15321400023 its reverse (32000412351), we get a palindrome (47321812374).

The spelling of 15321400023 in words is "fifteen billion, three hundred twenty-one million, four hundred thousand, twenty-three".