15423454203451 has 12 divisors (see below), whose sum is σ = 17941667794848. Its totient is φ = 13220030936112.

The previous prime is 15423454203413. The next prime is 15423454203539. The reversal of 15423454203451 is 15430245432451.

It is a happy number.

It is not a de Polignac number, because 15423454203451 - 2¹⁹ = 15423453679163 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 15423454203398 and 15423454203407.

It is not an unprimeable number, because it can be changed into a prime (15423454203401) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9361470 + ... + 10885036.

It is an arithmetic number, because the mean of its divisors is an integer number (1495138982904).

Almost surely, 2^{15423454203451} is an apocalyptic number.

15423454203451 is a deficient number, since it is larger than the sum of its proper divisors (2518213591397).

15423454203451 is a wasteful number, since it uses less digits than its factorization.

15423454203451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1730178 (or 1730171 counting only the distinct ones).

The product of its (nonzero) digits is 1152000, while the sum is 43.

The spelling of 15423454203451 in words is "fifteen trillion, four hundred twenty-three billion, four hundred fifty-four million, two hundred three thousand, four hundred fifty-one".