20344423462615 has 16 divisors (see below), whose sum is σ = 27915820077888. Its totient is φ = 13943013566976.

The previous prime is 20344423462607. The next prime is 20344423462639. The reversal of 20344423462615 is 51626432444302.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 20344423462615 - 2³ = 20344423462607 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 155105092 + ... + 155236201.

It is an arithmetic number, because the mean of its divisors is an integer number (1744738754868).

Almost surely, 2^{20344423462615} is an apocalyptic number.

20344423462615 is a deficient number, since it is larger than the sum of its proper divisors (7571396615273).

20344423462615 is a wasteful number, since it uses less digits than its factorization.

20344423462615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310343178.

The product of its (nonzero) digits is 3317760, while the sum is 46.

The spelling of 20344423462615 in words is "twenty trillion, three hundred forty-four billion, four hundred twenty-three million, four hundred sixty-two thousand, six hundred fifteen".