27257742423 has 12 divisors (see below), whose sum is σ = 39468564720. Its totient is φ = 18127395936.

The previous prime is 27257742409. The next prime is 27257742493. The reversal of 27257742423 is 32424775272.

27257742423 is a `hidden beast` number, since 2 + 72 + 577 + 4 + 2 + 4 + 2 + 3 = 666.

It is not a de Polignac number, because 27257742423 - 2¹² = 27257738327 is a prime.

It is a super-2 number, since 2×27257742423² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27257742493) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3698811 + ... + 3706172.

It is an arithmetic number, because the mean of its divisors is an integer number (3289047060).

Almost surely, 2^27257742423 is an apocalyptic number.

27257742423 is a deficient number, since it is larger than the sum of its proper divisors (12210822297).

27257742423 is a wasteful number, since it uses less digits than its factorization.

27257742423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7405398 (or 7405395 counting only the distinct ones).

The product of its digits is 1317120, while the sum is 45.

The spelling of 27257742423 in words is "twenty-seven billion, two hundred fifty-seven million, seven hundred forty-two thousand, four hundred twenty-three".