15454952879 has 4 divisors (see below), whose sum is σ = 16126907376. Its totient is φ = 14782998384.

The previous prime is 15454952819. The next prime is 15454952893. The reversal of 15454952879 is 97825945451.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 97825945451 = 13 ⋅7525072727.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15454952879 is a prime.

It is a super-2 number, since 2×15454952879² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15454952819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 335977214 + ... + 335977259.

It is an arithmetic number, because the mean of its divisors is an integer number (4031726844).

Almost surely, 2^15454952879 is an apocalyptic number.

15454952879 is a deficient number, since it is larger than the sum of its proper divisors (671954497).

15454952879 is an equidigital number, since it uses as much as digits as its factorization.

15454952879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 671954496.

The product of its digits is 18144000, while the sum is 59.

The spelling of 15454952879 in words is "fifteen billion, four hundred fifty-four million, nine hundred fifty-two thousand, eight hundred seventy-nine".