20395753451 has 4 divisors (see below), whose sum is σ = 21595503672. Its totient is φ = 19196003232.

The previous prime is 20395753397. The next prime is 20395753463. The reversal of 20395753451 is 15435759302.

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 20395753451 - 2⁶ = 20395753387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20395753051) 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, 599875085 + ... + 599875118.

It is an arithmetic number, because the mean of its divisors is an integer number (5398875918).

Almost surely, 2^20395753451 is an apocalyptic number.

20395753451 is a deficient number, since it is larger than the sum of its proper divisors (1199750221).

20395753451 is a wasteful number, since it uses less digits than its factorization.

20395753451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1199750220.

The product of its (nonzero) digits is 567000, while the sum is 44.

The spelling of 20395753451 in words is "twenty billion, three hundred ninety-five million, seven hundred fifty-three thousand, four hundred fifty-one".