20251872537424 has 40 divisors (see below), whose sum is σ = 42814480947840. Its totient is φ = 9203377958400.

The previous prime is 20251872537359. The next prime is 20251872537439. The reversal of 20251872537424 is 42473527815202.

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, 11811544 + ... + 13417015.

It is an arithmetic number, because the mean of its divisors is an integer number (1070362023696).

Almost surely, 2^{20251872537424} is an apocalyptic number.

It is an amenable number.

20251872537424 is an abundant number, since it is smaller than the sum of its proper divisors (22562608410416).

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

20251872537424 is a wasteful number, since it uses less digits than its factorization.

20251872537424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25233139 (or 25233133 counting only the distinct ones).

The product of its (nonzero) digits is 7526400, while the sum is 52.

The spelling of 20251872537424 in words is "twenty trillion, two hundred fifty-one billion, eight hundred seventy-two million, five hundred thirty-seven thousand, four hundred twenty-four".