20245742372 has 24 divisors (see below), whose sum is σ = 38088301440. Its totient is φ = 9386042400.

The previous prime is 20245742359. The next prime is 20245742383. The reversal of 20245742372 is 27324754202.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2830379 + ... + 2837522.

It is an arithmetic number, because the mean of its divisors is an integer number (1587012560).

Almost surely, 2^20245742372 is an apocalyptic number.

It is an amenable number.

20245742372 is a deficient number, since it is larger than the sum of its proper divisors (17842559068).

20245742372 is a wasteful number, since it uses less digits than its factorization.

20245742372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5667971 (or 5667969 counting only the distinct ones).

The product of its (nonzero) digits is 188160, while the sum is 38.

The spelling of 20245742372 in words is "twenty billion, two hundred forty-five million, seven hundred forty-two thousand, three hundred seventy-two".