20354152551 has 8 divisors (see below), whose sum is σ = 27301378944. Its totient is φ = 13488180600.

The previous prime is 20354152549. The next prime is 20354152561. The reversal of 20354152551 is 15525145302.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20354152551 - 2¹ = 20354152549 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20354152501) 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, 20313025 + ... + 20314026.

It is an arithmetic number, because the mean of its divisors is an integer number (3412672368).

Almost surely, 2^20354152551 is an apocalyptic number.

20354152551 is a deficient number, since it is larger than the sum of its proper divisors (6947226393).

20354152551 is a wasteful number, since it uses less digits than its factorization.

20354152551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40627221.

The product of its (nonzero) digits is 30000, while the sum is 33.

Adding to 20354152551 its reverse (15525145302), we get a palindrome (35879297853).

The spelling of 20354152551 in words is "twenty billion, three hundred fifty-four million, one hundred fifty-two thousand, five hundred fifty-one".