15454929854 has 16 divisors (see below), whose sum is σ = 28532178528. Its totient is φ = 6114038112.

The previous prime is 15454929827. The next prime is 15454929871. The reversal of 15454929854 is 45892945451.

It is a super-2 number, since 2×15454929854² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 15454929854.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42458417 + ... + 42458780.

It is an arithmetic number, because the mean of its divisors is an integer number (1783261158).

Almost surely, 2^15454929854 is an apocalyptic number.

15454929854 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

15454929854 is a deficient number, since it is larger than the sum of its proper divisors (13077248674).

15454929854 is a wasteful number, since it uses less digits than its factorization.

15454929854 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84917219.

The product of its digits is 10368000, while the sum is 56.

The spelling of 15454929854 in words is "fifteen billion, four hundred fifty-four million, nine hundred twenty-nine thousand, eight hundred fifty-four".