60555531391 has 2 divisors, whose sum is σ = 60555531392. Its totient is φ = 60555531390.

The previous prime is 60555531349. The next prime is 60555531431. The reversal of 60555531391 is 19313555506.

60555531391 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 60555531391 - 2²⁹ = 60018660479 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (60555531691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30277765695 + 30277765696.

It is an arithmetic number, because the mean of its divisors is an integer number (30277765696).

Almost surely, 2^60555531391 is an apocalyptic number.

60555531391 is a deficient number, since it is larger than the sum of its proper divisors (1).

60555531391 is an equidigital number, since it uses as much as digits as its factorization.

60555531391 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 303750, while the sum is 43.

The spelling of 60555531391 in words is "sixty billion, five hundred fifty-five million, five hundred thirty-one thousand, three hundred ninety-one".