15420456602 has 4 divisors (see below), whose sum is σ = 23130684906. Its totient is φ = 7710228300.

The previous prime is 15420456599. The next prime is 15420456617. The reversal of 15420456602 is 20665402451.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 14952642961 + 467813641 = 122281^2 + 21629^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3855114149 + ... + 3855114152.

Almost surely, 2^15420456602 is an apocalyptic number.

15420456602 is a deficient number, since it is larger than the sum of its proper divisors (7710228304).

15420456602 is an equidigital number, since it uses as much as digits as its factorization.

15420456602 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7710228303.

The product of its (nonzero) digits is 57600, while the sum is 35.

The spelling of 15420456602 in words is "fifteen billion, four hundred twenty million, four hundred fifty-six thousand, six hundred two".