1564945227072 has 56 divisors (see below), whose sum is σ = 4600649168000. Its totient is φ = 521648408448.

The previous prime is 1564945227037. The next prime is 1564945227127. The reversal of 1564945227072 is 2707225494651.

It is a happy number.

1564945227072 is a `hidden beast` number, since 1 + 5 + 6 + 49 + 4 + 522 + 7 + 0 + 72 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

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, 452818072 + ... + 452821527.

Almost surely, 2^{1564945227072} is an apocalyptic number.

1564945227072 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1564945227072 is an abundant number, since it is smaller than the sum of its proper divisors (3035703940928).

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

1564945227072 is an equidigital number, since it uses as much as digits as its factorization.

1564945227072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 905639620 (or 905639604 counting only the distinct ones).

The product of its (nonzero) digits is 8467200, while the sum is 54.

The spelling of 1564945227072 in words is "one trillion, five hundred sixty-four billion, nine hundred forty-five million, two hundred twenty-seven thousand, seventy-two".