20251273802 has 16 divisors (see below), whose sum is σ = 31415938560. Its totient is φ = 9784748688.

The previous prime is 20251273799. The next prime is 20251273831. The reversal of 20251273802 is 20837215202.

It is a super-2 number, since 2×20251273802² (a number of 21 digits) contains 22 as substring.

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, 1356113 + ... + 1370964.

It is an arithmetic number, because the mean of its divisors is an integer number (1963496160).

Almost surely, 2^20251273802 is an apocalyptic number.

20251273802 is a deficient number, since it is larger than the sum of its proper divisors (11164664758).

20251273802 is a wasteful number, since it uses less digits than its factorization.

20251273802 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2727205.

The product of its (nonzero) digits is 13440, while the sum is 32.

The spelling of 20251273802 in words is "twenty billion, two hundred fifty-one million, two hundred seventy-three thousand, eight hundred two".