1564642305552 has 20 divisors (see below), whose sum is σ = 4041992622800. Its totient is φ = 521547435168.

The previous prime is 1564642305533. The next prime is 1564642305553. The reversal of 1564642305552 is 2555032464651.

It is a Harshad number since it is a multiple of its sum of digits (48), and also a Moran number because the ratio is a prime number: 32596714699 = 1564642305552 / (1 + 5 + 6 + 4 + 6 + 4 + 2 + 3 + 0 + 5 + 5 + 5 + 2).

It is not an unprimeable number, because it can be changed into a prime (1564642305553) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16298357302 + ... + 16298357397.

It is an arithmetic number, because the mean of its divisors is an integer number (202099631140).

Almost surely, 2^{1564642305552} is an apocalyptic number.

1564642305552 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1564642305552 is an abundant number, since it is smaller than the sum of its proper divisors (2477350317248).

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

1564642305552 is a wasteful number, since it uses less digits than its factorization.

1564642305552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32596714710 (or 32596714704 counting only the distinct ones).

The product of its (nonzero) digits is 4320000, while the sum is 48.

The spelling of 1564642305552 in words is "one trillion, five hundred sixty-four billion, six hundred forty-two million, three hundred five thousand, five hundred fifty-two".