20154313464 has 32 divisors (see below), whose sum is σ = 52011133440. Its totient is φ = 6501391200.

The previous prime is 20154313427. The next prime is 20154313471. The reversal of 20154313464 is 46431345102.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13543822 + ... + 13545309.

It is an arithmetic number, because the mean of its divisors is an integer number (1625347920).

Almost surely, 2^20154313464 is an apocalyptic number.

20154313464 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20154313464 is an abundant number, since it is smaller than the sum of its proper divisors (31856819976).

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

20154313464 is a wasteful number, since it uses less digits than its factorization.

20154313464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27089171 (or 27089167 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 33.

Adding to 20154313464 its reverse (46431345102), we get a palindrome (66585658566).

The spelling of 20154313464 in words is "twenty billion, one hundred fifty-four million, three hundred thirteen thousand, four hundred sixty-four".