1563211764972 has 192 divisors, whose sum is σ = 4778135416320. Its totient is φ = 435715718400.

The previous prime is 1563211764971. The next prime is 1563211764991. The reversal of 1563211764972 is 2794671123651.

1563211764972 is a `hidden beast` number, since 1 + 5 + 6 + 32 + 117 + 6 + 497 + 2 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (1563211764971) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4191822 + ... + 4549482.

It is an arithmetic number, because the mean of its divisors is an integer number (24886121960).

Almost surely, 2^{1563211764972} is an apocalyptic number.

1563211764972 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1563211764972, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2389067708160).

1563211764972 is an abundant number, since it is smaller than the sum of its proper divisors (3214923651348).

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

1563211764972 is a wasteful number, since it uses less digits than its factorization.

1563211764972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 357981 (or 357973 counting only the distinct ones).

The product of its digits is 3810240, while the sum is 54.

The spelling of 1563211764972 in words is "one trillion, five hundred sixty-three billion, two hundred eleven million, seven hundred sixty-four thousand, nine hundred seventy-two".