20464481315 has 8 divisors (see below), whose sum is σ = 24782675280. Its totient is φ = 16221386592.

The previous prime is 20464481287. The next prime is 20464481339. The reversal of 20464481315 is 51318446402.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 20464481315 - 2¹⁰ = 20464480291 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18774209 + ... + 18775298.

It is an arithmetic number, because the mean of its divisors is an integer number (3097834410).

Almost surely, 2^20464481315 is an apocalyptic number.

20464481315 is a deficient number, since it is larger than the sum of its proper divisors (4318193965).

20464481315 is a wasteful number, since it uses less digits than its factorization.

20464481315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37549621.

The product of its (nonzero) digits is 92160, while the sum is 38.

The spelling of 20464481315 in words is "twenty billion, four hundred sixty-four million, four hundred eighty-one thousand, three hundred fifteen".