24499479157 has 2 divisors, whose sum is σ = 24499479158. Its totient is φ = 24499479156.

The previous prime is 24499479133. The next prime is 24499479197. The reversal of 24499479157 is 75197499442.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14401440036 + 10098039121 = 120006^2 + 100489^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-24499479157 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 24499479095 and 24499479104.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (24499479197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12249739578 + 12249739579.

It is an arithmetic number, because the mean of its divisors is an integer number (12249739579).

Almost surely, 2^24499479157 is an apocalyptic number.

It is an amenable number.

24499479157 is a deficient number, since it is larger than the sum of its proper divisors (1).

24499479157 is an equidigital number, since it uses as much as digits as its factorization.

24499479157 is an evil number, because the sum of its binary digits is even.

The product of its digits is 22861440, while the sum is 61.

The spelling of 24499479157 in words is "twenty-four billion, four hundred ninety-nine million, four hundred seventy-nine thousand, one hundred fifty-seven".