27623798157 has 4 divisors (see below), whose sum is σ = 36831730880. Its totient is φ = 18415865436.

The previous prime is 27623798141. The next prime is 27623798159. The reversal of 27623798157 is 75189732672.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 27623798157 - 2⁴ = 27623798141 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 27623798097 and 27623798106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27623798159) 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, 4603966357 + ... + 4603966362.

It is an arithmetic number, because the mean of its divisors is an integer number (9207932720).

Almost surely, 2^27623798157 is an apocalyptic number.

It is an amenable number.

27623798157 is a deficient number, since it is larger than the sum of its proper divisors (9207932723).

27623798157 is an equidigital number, since it uses as much as digits as its factorization.

27623798157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9207932722.

The product of its digits is 8890560, while the sum is 57.

The spelling of 27623798157 in words is "twenty-seven billion, six hundred twenty-three million, seven hundred ninety-eight thousand, one hundred fifty-seven".