20154151464 has 32 divisors (see below), whose sum is σ = 50391673440. Its totient is φ = 6717211200.

The previous prime is 20154151453. The next prime is 20154151481. The reversal of 20154151464 is 46415145102.

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, 161454 + ... + 257634.

It is an arithmetic number, because the mean of its divisors is an integer number (1574739795).

Almost surely, 2^20154151464 is an apocalyptic number.

20154151464 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20154151464 is an abundant number, since it is smaller than the sum of its proper divisors (30237521976).

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

20154151464 is a wasteful number, since it uses less digits than its factorization.

20154151464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104921 (or 104917 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 33.

Adding to 20154151464 its reverse (46415145102), we get a palindrome (66569296566).

The spelling of 20154151464 in words is "twenty billion, one hundred fifty-four million, one hundred fifty-one thousand, four hundred sixty-four".