11620754591 has 2 divisors, whose sum is σ = 11620754592. Its totient is φ = 11620754590.

The previous prime is 11620754573. The next prime is 11620754603. The reversal of 11620754591 is 19545702611.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11620754591 - 2⁶ = 11620754527 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11620754501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5810377295 + 5810377296.

It is an arithmetic number, because the mean of its divisors is an integer number (5810377296).

Almost surely, 2^11620754591 is an apocalyptic number.

11620754591 is a deficient number, since it is larger than the sum of its proper divisors (1).

11620754591 is an equidigital number, since it uses as much as digits as its factorization.

11620754591 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 75600, while the sum is 41.

The spelling of 11620754591 in words is "eleven billion, six hundred twenty million, seven hundred fifty-four thousand, five hundred ninety-one".