20154550344 has 16 divisors (see below), whose sum is σ = 50386375920. Its totient is φ = 6718183440.

The previous prime is 20154550337. The next prime is 20154550393. The reversal of 20154550344 is 44305545102.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 419886442 + ... + 419886489.

It is an arithmetic number, because the mean of its divisors is an integer number (3149148495).

Almost surely, 2^20154550344 is an apocalyptic number.

20154550344 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20154550344 is an abundant number, since it is smaller than the sum of its proper divisors (30231825576).

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

20154550344 is a wasteful number, since it uses less digits than its factorization.

20154550344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 839772940 (or 839772936 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 33.

The spelling of 20154550344 in words is "twenty billion, one hundred fifty-four million, five hundred fifty thousand, three hundred forty-four".