20254514644 has 48 divisors (see below), whose sum is σ = 43653678208. Its totient is φ = 8007527808.

The previous prime is 20254514641. The next prime is 20254514659. The reversal of 20254514644 is 44641545202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20254514641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 563887 + ... + 598729.

Almost surely, 2^20254514644 is an apocalyptic number.

It is an amenable number.

20254514644 is an abundant number, since it is smaller than the sum of its proper divisors (23399163564).

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

20254514644 is a wasteful number, since it uses less digits than its factorization.

20254514644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36464 (or 36462 counting only the distinct ones).

The product of its (nonzero) digits is 153600, while the sum is 37.

The spelling of 20254514644 in words is "twenty billion, two hundred fifty-four million, five hundred fourteen thousand, six hundred forty-four".