20002315451 has 4 divisors (see below), whose sum is σ = 20004290304. Its totient is φ = 20000340600.

The previous prime is 20002315439. The next prime is 20002315453. The reversal of 20002315451 is 15451320002.

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 20002315451 - 2¹⁴ = 20002299067 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20002315453) 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, 972155 + ... + 992516.

It is an arithmetic number, because the mean of its divisors is an integer number (5001072576).

Almost surely, 2^20002315451 is an apocalyptic number.

20002315451 is a deficient number, since it is larger than the sum of its proper divisors (1974853).

20002315451 is a wasteful number, since it uses less digits than its factorization.

20002315451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1974852.

The product of its (nonzero) digits is 1200, while the sum is 23.

Adding to 20002315451 its reverse (15451320002), we get a palindrome (35453635453).

The spelling of 20002315451 in words is "twenty billion, two million, three hundred fifteen thousand, four hundred fifty-one".