27285953957 has 2 divisors, whose sum is σ = 27285953958. Its totient is φ = 27285953956.

The previous prime is 27285953951. The next prime is 27285953969. The reversal of 27285953957 is 75935958272.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27058276036 + 227677921 = 164494^2 + 15089^2 .

It is a cyclic number.

It is not a de Polignac number, because 27285953957 - 2¹⁰ = 27285952933 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 27285953957.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27285953951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13642976978 + 13642976979.

It is an arithmetic number, because the mean of its divisors is an integer number (13642976979).

Almost surely, 2^27285953957 is an apocalyptic number.

It is an amenable number.

27285953957 is a deficient number, since it is larger than the sum of its proper divisors (1).

27285953957 is an equidigital number, since it uses as much as digits as its factorization.

27285953957 is an evil number, because the sum of its binary digits is even.

The product of its digits is 47628000, while the sum is 62.

The spelling of 27285953957 in words is "twenty-seven billion, two hundred eighty-five million, nine hundred fifty-three thousand, nine hundred fifty-seven".