27245400399 has 48 divisors (see below), whose sum is σ = 45630292032. Its totient is φ = 15342856704.

The previous prime is 27245400397. The next prime is 27245400407. The reversal of 27245400399 is 99300454272.

27245400399 is a `hidden beast` number, since 2 + 72 + 4 + 540 + 0 + 39 + 9 = 666.

It is not a de Polignac number, because 27245400399 - 2¹ = 27245400397 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27245400397) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 10176249 + ... + 10178925.

It is an arithmetic number, because the mean of its divisors is an integer number (950631084).

Almost surely, 2^27245400399 is an apocalyptic number.

27245400399 is a deficient number, since it is larger than the sum of its proper divisors (18384891633).

27245400399 is a wasteful number, since it uses less digits than its factorization.

27245400399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4976 (or 4973 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 45.

The spelling of 27245400399 in words is "twenty-seven billion, two hundred forty-five million, four hundred thousand, three hundred ninety-nine".