20154065514 has 64 divisors (see below), whose sum is σ = 46951584768. Its totient is φ = 5705884800.

The previous prime is 20154065513. The next prime is 20154065521. The reversal of 20154065514 is 41556045102.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (20154065513) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 89107 + ... + 219654.

It is an arithmetic number, because the mean of its divisors is an integer number (733618512).

Almost surely, 2^20154065514 is an apocalyptic number.

20154065514 is an abundant number, since it is smaller than the sum of its proper divisors (26797519254).

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

20154065514 is a wasteful number, since it uses less digits than its factorization.

20154065514 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 308843.

The product of its (nonzero) digits is 24000, while the sum is 33.

The spelling of 20154065514 in words is "twenty billion, one hundred fifty-four million, sixty-five thousand, five hundred fourteen".