20023514554 has 4 divisors (see below), whose sum is σ = 30035271834. Its totient is φ = 10011757276.

The previous prime is 20023514543. The next prime is 20023514603. The reversal of 20023514554 is 45541532002.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 19300711329 + 722803225 = 138927^2 + 26885^2 .

It is a super-2 number, since 2×20023514554² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5005878637 + ... + 5005878640.

Almost surely, 2^20023514554 is an apocalyptic number.

20023514554 is a deficient number, since it is larger than the sum of its proper divisors (10011757280).

20023514554 is a wasteful number, since it uses less digits than its factorization.

20023514554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10011757279.

The product of its (nonzero) digits is 24000, while the sum is 31.

The spelling of 20023514554 in words is "twenty billion, twenty-three million, five hundred fourteen thousand, five hundred fifty-four".