15553968946 has 8 divisors (see below), whose sum is σ = 23398190640. Its totient is φ = 7754572068.

The previous prime is 15553968931. The next prime is 15553968961. The reversal of 15553968946 is 64986935551.

It is an interprime number because it is at equal distance from previous prime (15553968931) and next prime (15553968961).

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11205336 + ... + 11206723.

It is an arithmetic number, because the mean of its divisors is an integer number (2924773830).

Almost surely, 2^15553968946 is an apocalyptic number.

15553968946 is a deficient number, since it is larger than the sum of its proper divisors (7844221694).

15553968946 is a wasteful number, since it uses less digits than its factorization.

15553968946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22412408.

The product of its digits is 34992000, while the sum is 61.

The spelling of 15553968946 in words is "fifteen billion, five hundred fifty-three million, nine hundred sixty-eight thousand, nine hundred forty-six".