20251151020 has 12 divisors (see below), whose sum is σ = 42527417184. Its totient is φ = 8100460400.

The previous prime is 20251151003. The next prime is 20251151029. The reversal of 20251151020 is 2015115202.

It is not an unprimeable number, because it can be changed into a prime (20251151029) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 506278756 + ... + 506278795.

It is an arithmetic number, because the mean of its divisors is an integer number (3543951432).

Almost surely, 2^20251151020 is an apocalyptic number.

20251151020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20251151020 is an abundant number, since it is smaller than the sum of its proper divisors (22276266164).

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

20251151020 is a wasteful number, since it uses less digits than its factorization.

20251151020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1012557560 (or 1012557558 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 19.

Adding to 20251151020 its reverse (2015115202), we get a palindrome (22266266222).

The spelling of 20251151020 in words is "twenty billion, two hundred fifty-one million, one hundred fifty-one thousand, twenty".