1223051615664 has 80 divisors (see below), whose sum is σ = 3245788899072. Its totient is φ = 396562017024.

The previous prime is 1223051615587. The next prime is 1223051615677. The reversal of 1223051615664 is 4665161503221.

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, 6879477 + ... + 7055019.

Almost surely, 2^{1223051615664} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1223051615664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1622894449536).

1223051615664 is an abundant number, since it is smaller than the sum of its proper divisors (2022737283408).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1223051615664 is a wasteful number, since it uses less digits than its factorization.

1223051615664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179514 (or 179508 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 42.

The spelling of 1223051615664 in words is "one trillion, two hundred twenty-three billion, fifty-one million, six hundred fifteen thousand, six hundred sixty-four".