20074800251 has 16 divisors (see below), whose sum is σ = 23216842080. Its totient is φ = 17154938880.

The previous prime is 20074800173. The next prime is 20074800289. The reversal of 20074800251 is 15200847002.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20074800251 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20074850251) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 84935 + ... + 217631.

It is an arithmetic number, because the mean of its divisors is an integer number (1451052630).

Almost surely, 2^20074800251 is an apocalyptic number.

20074800251 is a deficient number, since it is larger than the sum of its proper divisors (3142041829).

20074800251 is a wasteful number, since it uses less digits than its factorization.

20074800251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133534.

The product of its (nonzero) digits is 4480, while the sum is 29.

The spelling of 20074800251 in words is "twenty billion, seventy-four million, eight hundred thousand, two hundred fifty-one".