20035045251 has 32 divisors (see below), whose sum is σ = 32012339520. Its totient is φ = 12310900992.

The previous prime is 20035045243. The next prime is 20035045253. The reversal of 20035045251 is 15254053002.

It is a happy number.

20035045251 is a `hidden beast` number, since 20 + 0 + 350 + 45 + 251 = 666.

It is not a de Polignac number, because 20035045251 - 2³ = 20035045243 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (20035045253) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 195471 + ... + 279783.

It is an arithmetic number, because the mean of its divisors is an integer number (1000385610).

Almost surely, 2^20035045251 is an apocalyptic number.

20035045251 is a deficient number, since it is larger than the sum of its proper divisors (11977294269).

20035045251 is a wasteful number, since it uses less digits than its factorization.

20035045251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85012 (or 85006 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

Adding to 20035045251 its reverse (15254053002), we get a palindrome (35289098253).

The spelling of 20035045251 in words is "twenty billion, thirty-five million, forty-five thousand, two hundred fifty-one".