15454645451 has 4 divisors (see below), whose sum is σ = 17662451952. Its totient is φ = 13246838952.

The previous prime is 15454645373. The next prime is 15454645457.

15454645451 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 15454645451 - 2¹⁴ = 15454629067 is a prime.

It is a super-2 number, since 2×15454645451² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15454645457) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1103903240 + ... + 1103903253.

It is an arithmetic number, because the mean of its divisors is an integer number (4415612988).

Almost surely, 2^15454645451 is an apocalyptic number.

15454645451 is a deficient number, since it is larger than the sum of its proper divisors (2207806501).

15454645451 is an equidigital number, since it uses as much as digits as its factorization.

15454645451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2207806500.

The product of its digits is 960000, while the sum is 44.

The spelling of 15454645451 in words is "fifteen billion, four hundred fifty-four million, six hundred forty-five thousand, four hundred fifty-one".