15554541421451 has 2 divisors, whose sum is σ = 15554541421452. Its totient is φ = 15554541421450.

The previous prime is 15554541421429. The next prime is 15554541421453. The reversal of 15554541421451 is 15412414545551.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15554541421451 is a prime.

Together with 15554541421453, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 15554541421396 and 15554541421405.

It is not a weakly prime, because it can be changed into another prime (15554541421453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7777270710725 + 7777270710726.

It is an arithmetic number, because the mean of its divisors is an integer number (7777270710726).

Almost surely, 2^{15554541421451} is an apocalyptic number.

15554541421451 is a deficient number, since it is larger than the sum of its proper divisors (1).

15554541421451 is an equidigital number, since it uses as much as digits as its factorization.

15554541421451 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1600000, while the sum is 47.

The spelling of 15554541421451 in words is "fifteen trillion, five hundred fifty-four billion, five hundred forty-one million, four hundred twenty-one thousand, four hundred fifty-one".