22511551554451 has 2 divisors, whose sum is σ = 22511551554452. Its totient is φ = 22511551554450.

The previous prime is 22511551554419. The next prime is 22511551554497. The reversal of 22511551554451 is 15445515511522.

It is an a-pointer prime, because the next prime (22511551554497) can be obtained adding 22511551554451 to its sum of digits (46).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22511551554451 - 2⁵ = 22511551554419 is a prime.

It is a super-2 number, since 2×22511551554451² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (22511551504451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11255775777225 + 11255775777226.

It is an arithmetic number, because the mean of its divisors is an integer number (11255775777226).

Almost surely, 2^{22511551554451} is an apocalyptic number.

22511551554451 is a deficient number, since it is larger than the sum of its proper divisors (1).

22511551554451 is an equidigital number, since it uses as much as digits as its factorization.

22511551554451 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1000000, while the sum is 46.

The spelling of 22511551554451 in words is "twenty-two trillion, five hundred eleven billion, five hundred fifty-one million, five hundred fifty-four thousand, four hundred fifty-one".