1522740439972 has 12 divisors (see below), whose sum is σ = 2664813975516. Its totient is φ = 761365018400.

The previous prime is 1522740439937. The next prime is 1522740439973. The reversal of 1522740439972 is 2799340472251.

It can be written as a sum of positive squares in 2 ways, for example, as 225182517156 + 1297557922816 = 474534^2 + 1139104^2 .

It is a super-2 number, since 2×1522740439972² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1522740439973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 599779 + ... + 1845322.

It is an arithmetic number, because the mean of its divisors is an integer number (222067831293).

Almost surely, 2^{1522740439972} is an apocalyptic number.

It is an amenable number.

1522740439972 is a deficient number, since it is larger than the sum of its proper divisors (1142073535544).

1522740439972 is a wasteful number, since it uses less digits than its factorization.

1522740439972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2600798 (or 2600796 counting only the distinct ones).

The product of its (nonzero) digits is 7620480, while the sum is 55.

The spelling of 1522740439972 in words is "one trillion, five hundred twenty-two billion, seven hundred forty million, four hundred thirty-nine thousand, nine hundred seventy-two".