55678134497 has 2 divisors, whose sum is σ = 55678134498. Its totient is φ = 55678134496.

The previous prime is 55678134433. The next prime is 55678134503. The reversal of 55678134497 is 79443187655.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 44984713216 + 10693421281 = 212096^2 + 103409^2 .

It is a cyclic number.

It is not a de Polignac number, because 55678134497 - 2⁶ = 55678134433 is a prime.

It is a super-2 number, since 2×55678134497² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (55678134427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27839067248 + 27839067249.

It is an arithmetic number, because the mean of its divisors is an integer number (27839067249).

Almost surely, 2^55678134497 is an apocalyptic number.

It is an amenable number.

55678134497 is a deficient number, since it is larger than the sum of its proper divisors (1).

55678134497 is an equidigital number, since it uses as much as digits as its factorization.

55678134497 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25401600, while the sum is 59.

The spelling of 55678134497 in words is "fifty-five billion, six hundred seventy-eight million, one hundred thirty-four thousand, four hundred ninety-seven".