20231251554 has 16 divisors (see below), whose sum is σ = 40855344192. Its totient is φ = 6678277008.

The previous prime is 20231251543. The next prime is 20231251561. The reversal of 20231251554 is 45515213202.

It is a super-3 number, since 3×20231251554³ (a number of 32 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16367709 + ... + 16368944.

It is an arithmetic number, because the mean of its divisors is an integer number (2553459012).

Almost surely, 2^20231251554 is an apocalyptic number.

20231251554 is an abundant number, since it is smaller than the sum of its proper divisors (20624092638).

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

20231251554 is a wasteful number, since it uses less digits than its factorization.

20231251554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32736761.

The product of its (nonzero) digits is 12000, while the sum is 30.

Adding to 20231251554 its reverse (45515213202), we get a palindrome (65746464756).

The spelling of 20231251554 in words is "twenty billion, two hundred thirty-one million, two hundred fifty-one thousand, five hundred fifty-four".