15405045451 has 2 divisors, whose sum is σ = 15405045452. Its totient is φ = 15405045450.

The previous prime is 15405045449. The next prime is 15405045479. The reversal of 15405045451 is 15454050451.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 15405045451 - 2¹ = 15405045449 is a prime.

It is a super-4 number, since 4×15405045451⁴ (a number of 42 digits) contains 4444 as substring.

Together with 15405045449, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (15405045421) 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, 7702522725 + 7702522726.

It is an arithmetic number, because the mean of its divisors is an integer number (7702522726).

Almost surely, 2^15405045451 is an apocalyptic number.

15405045451 is a deficient number, since it is larger than the sum of its proper divisors (1).

15405045451 is an equidigital number, since it uses as much as digits as its factorization.

15405045451 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40000, while the sum is 34.

The spelling of 15405045451 in words is "fifteen billion, four hundred five million, forty-five thousand, four hundred fifty-one".