1551515314451 has 2 divisors, whose sum is σ = 1551515314452. Its totient is φ = 1551515314450.

The previous prime is 1551515314411. The next prime is 1551515314487. The reversal of 1551515314451 is 1544135151551.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1551515314451 - 2⁶ = 1551515314387 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 1551515314399 and 1551515314408.

It is not a weakly prime, because it can be changed into another prime (1551515314411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 775757657225 + 775757657226.

It is an arithmetic number, because the mean of its divisors is an integer number (775757657226).

Almost surely, 2^{1551515314451} is an apocalyptic number.

1551515314451 is a deficient number, since it is larger than the sum of its proper divisors (1).

1551515314451 is an equidigital number, since it uses as much as digits as its factorization.

1551515314451 is an evil number, because the sum of its binary digits is even.

The product of its digits is 150000, while the sum is 41.

The spelling of 1551515314451 in words is "one trillion, five hundred fifty-one billion, five hundred fifteen million, three hundred fourteen thousand, four hundred fifty-one".