55616061499 has 2 divisors, whose sum is σ = 55616061500. Its totient is φ = 55616061498.

The previous prime is 55616061433. The next prime is 55616061509. The reversal of 55616061499 is 99416061655.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55616061499 - 2¹³ = 55616053307 is a prime.

It is not a weakly prime, because it can be changed into another prime (55616061419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27808030749 + 27808030750.

It is an arithmetic number, because the mean of its divisors is an integer number (27808030750).

Almost surely, 2^55616061499 is an apocalyptic number.

55616061499 is a deficient number, since it is larger than the sum of its proper divisors (1).

55616061499 is an equidigital number, since it uses as much as digits as its factorization.

55616061499 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1749600, while the sum is 52.

The spelling of 55616061499 in words is "fifty-five billion, six hundred sixteen million, sixty-one thousand, four hundred ninety-nine".