20002374551 has 2 divisors, whose sum is σ = 20002374552. Its totient is φ = 20002374550.

The previous prime is 20002374547. The next prime is 20002374571. The reversal of 20002374551 is 15547320002.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20002374551 - 2² = 20002374547 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20002374521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10001187275 + 10001187276.

It is an arithmetic number, because the mean of its divisors is an integer number (10001187276).

Almost surely, 2^20002374551 is an apocalyptic number.

20002374551 is a deficient number, since it is larger than the sum of its proper divisors (1).

20002374551 is an equidigital number, since it uses as much as digits as its factorization.

20002374551 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8400, while the sum is 29.

Adding to 20002374551 its reverse (15547320002), we get a palindrome (35549694553).

The spelling of 20002374551 in words is "twenty billion, two million, three hundred seventy-four thousand, five hundred fifty-one".