2123972163522 has 40 divisors (see below), whose sum is σ = 5191931959632. Its totient is φ = 643627927800.

The previous prime is 2123972163473. The next prime is 2123972163587. The reversal of 2123972163522 is 2253612793212.

2123972163522 is a `hidden beast` number, since 2 + 1 + 2 + 3 + 9 + 7 + 2 + 1 + 635 + 2 + 2 = 666.

It is a super-2 number, since 2×2123972163522² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 595950004 + ... + 595953567.

Almost surely, 2^{2123972163522} is an apocalyptic number.

2123972163522 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2123972163522 is an abundant number, since it is smaller than the sum of its proper divisors (3067959796110).

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

2123972163522 is a wasteful number, since it uses less digits than its factorization.

2123972163522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1191903596 (or 1191903587 counting only the distinct ones).

The product of its digits is 544320, while the sum is 45.

The spelling of 2123972163522 in words is "two trillion, one hundred twenty-three billion, nine hundred seventy-two million, one hundred sixty-three thousand, five hundred twenty-two".