20154214051 has 4 divisors (see below), whose sum is σ = 21339756072. Its totient is φ = 18968672032.

The previous prime is 20154214049. The next prime is 20154214061. The reversal of 20154214051 is 15041245102.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20154214051 - 2¹ = 20154214049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20154214061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 592770985 + ... + 592771018.

It is an arithmetic number, because the mean of its divisors is an integer number (5334939018).

Almost surely, 2^20154214051 is an apocalyptic number.

20154214051 is a deficient number, since it is larger than the sum of its proper divisors (1185542021).

20154214051 is a wasteful number, since it uses less digits than its factorization.

20154214051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1185542020.

The product of its (nonzero) digits is 1600, while the sum is 25.

Adding to 20154214051 its reverse (15041245102), we get a palindrome (35195459153).

The spelling of 20154214051 in words is "twenty billion, one hundred fifty-four million, two hundred fourteen thousand, fifty-one".