20240661071512 has 32 divisors (see below), whose sum is σ = 43398926438400. Its totient is φ = 8669352773664.

The previous prime is 20240661071507. The next prime is 20240661071513. The reversal of 20240661071512 is 21517016604202.

It is a super-2 number, since 2×20240661071512² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20240661071513) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 108578062 + ... + 108764317.

It is an arithmetic number, because the mean of its divisors is an integer number (1356216451200).

Almost surely, 2^{20240661071512} is an apocalyptic number.

It is an amenable number.

20240661071512 is an abundant number, since it is smaller than the sum of its proper divisors (23158265366888).

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

20240661071512 is a wasteful number, since it uses less digits than its factorization.

20240661071512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217344055 (or 217344051 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 37.

Adding to 20240661071512 its reverse (21517016604202), we get a palindrome (41757677675714).

The spelling of 20240661071512 in words is "twenty trillion, two hundred forty billion, six hundred sixty-one million, seventy-one thousand, five hundred twelve".