15404620423 has 2 divisors, whose sum is σ = 15404620424. Its totient is φ = 15404620422.

The previous prime is 15404620411. The next prime is 15404620487. The reversal of 15404620423 is 32402640451.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15404620423 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15404620523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7702310211 + 7702310212.

It is an arithmetic number, because the mean of its divisors is an integer number (7702310212).

Almost surely, 2^15404620423 is an apocalyptic number.

15404620423 is a deficient number, since it is larger than the sum of its proper divisors (1).

15404620423 is an equidigital number, since it uses as much as digits as its factorization.

15404620423 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23040, while the sum is 31.

The spelling of 15404620423 in words is "fifteen billion, four hundred four million, six hundred twenty thousand, four hundred twenty-three".