20451521114 has 16 divisors (see below), whose sum is σ = 31783189320. Its totient is φ = 9858192960.

The previous prime is 20451521113. The next prime is 20451521117. The reversal of 20451521114 is 41112515402.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 18893877025 + 1557644089 = 137455^2 + 39467^2 .

It is not an unprimeable number, because it can be changed into a prime (20451521113) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 228389 + ... + 305064.

Almost surely, 2^20451521114 is an apocalyptic number.

20451521114 is a deficient number, since it is larger than the sum of its proper divisors (11331668206).

20451521114 is a wasteful number, since it uses less digits than its factorization.

20451521114 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 534145.

The product of its (nonzero) digits is 1600, while the sum is 26.

The spelling of 20451521114 in words is "twenty billion, four hundred fifty-one million, five hundred twenty-one thousand, one hundred fourteen".