27405304754357 has 2 divisors, whose sum is σ = 27405304754358. Its totient is φ = 27405304754356.

The previous prime is 27405304754353. The next prime is 27405304754371. The reversal of 27405304754357 is 75345740350472.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23693617376881 + 3711687377476 = 4867609^2 + 1926574^2 .

It is a cyclic number.

It is not a de Polignac number, because 27405304754357 - 2² = 27405304754353 is a prime.

It is a super-2 number, since 2×27405304754357² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27405304754351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13702652377178 + 13702652377179.

It is an arithmetic number, because the mean of its divisors is an integer number (13702652377179).

Almost surely, 2^{27405304754357} is an apocalyptic number.

It is an amenable number.

27405304754357 is a deficient number, since it is larger than the sum of its proper divisors (1).

27405304754357 is an equidigital number, since it uses as much as digits as its factorization.

27405304754357 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 49392000, while the sum is 56.

The spelling of 27405304754357 in words is "twenty-seven trillion, four hundred five billion, three hundred four million, seven hundred fifty-four thousand, three hundred fifty-seven".