15855460802 has 4 divisors (see below), whose sum is σ = 23783191206. Its totient is φ = 7927730400.

The previous prime is 15855460799. The next prime is 15855460813. The reversal of 15855460802 is 20806455851.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 20806455851 = 2083 ⋅9988697.

It can be written as a sum of positive squares in only one way, i.e., 15043267801 + 812193001 = 122651^2 + 28499^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3963865199 + ... + 3963865202.

Almost surely, 2^15855460802 is an apocalyptic number.

15855460802 is a deficient number, since it is larger than the sum of its proper divisors (7927730404).

15855460802 is an equidigital number, since it uses as much as digits as its factorization.

15855460802 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7927730403.

The product of its (nonzero) digits is 384000, while the sum is 44.

The spelling of 15855460802 in words is "fifteen billion, eight hundred fifty-five million, four hundred sixty thousand, eight hundred two".