27342773251 has 16 divisors (see below), whose sum is σ = 29517465600. Its totient is φ = 25246263168.

The previous prime is 27342773243. The next prime is 27342773257. The reversal of 27342773251 is 15237724372.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 27342773251 - 2³ = 27342773243 is a prime.

It is a super-2 number, since 2×27342773251² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 27342773198 and 27342773207.

It is not an unprimeable number, because it can be changed into a prime (27342773257) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 149371 + ... + 277483.

It is an arithmetic number, because the mean of its divisors is an integer number (1844841600).

Almost surely, 2^27342773251 is an apocalyptic number.

27342773251 is a deficient number, since it is larger than the sum of its proper divisors (2174692349).

27342773251 is a wasteful number, since it uses less digits than its factorization.

27342773251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128418.

The product of its digits is 493920, while the sum is 43.

The spelling of 27342773251 in words is "twenty-seven billion, three hundred forty-two million, seven hundred seventy-three thousand, two hundred fifty-one".