11621061355499 has 2 divisors, whose sum is σ = 11621061355500. Its totient is φ = 11621061355498.

The previous prime is 11621061355487. The next prime is 11621061355513. The reversal of 11621061355499 is 99455316012611.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11621061355499 - 2¹⁶ = 11621061289963 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11621061355499.

It is not a weakly prime, because it can be changed into another prime (11621061355459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5810530677749 + 5810530677750.

It is an arithmetic number, because the mean of its divisors is an integer number (5810530677750).

Almost surely, 2^{11621061355499} is an apocalyptic number.

11621061355499 is a deficient number, since it is larger than the sum of its proper divisors (1).

11621061355499 is an equidigital number, since it uses as much as digits as its factorization.

11621061355499 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 53.

The spelling of 11621061355499 in words is "eleven trillion, six hundred twenty-one billion, sixty-one million, three hundred fifty-five thousand, four hundred ninety-nine".