15420510455 has 24 divisors (see below), whose sum is σ = 21572027568. Its totient is φ = 10551343488.

The previous prime is 15420510439. The next prime is 15420510463. The reversal of 15420510455 is 55401502451.

It is not a de Polignac number, because 15420510455 - 2⁴ = 15420510439 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 47027 + ... + 181803.

It is an arithmetic number, because the mean of its divisors is an integer number (898834482).

Almost surely, 2^15420510455 is an apocalyptic number.

15420510455 is a deficient number, since it is larger than the sum of its proper divisors (6151517113).

15420510455 is a wasteful number, since it uses less digits than its factorization.

15420510455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135263 (or 135256 counting only the distinct ones).

The product of its (nonzero) digits is 20000, while the sum is 32.

The spelling of 15420510455 in words is "fifteen billion, four hundred twenty million, five hundred ten thousand, four hundred fifty-five".