154766601491 has 2 divisors, whose sum is σ = 154766601492. Its totient is φ = 154766601490.

The previous prime is 154766601481. The next prime is 154766601499. The reversal of 154766601491 is 194106667451.

It is a strong prime.

It is an emirp because it is prime and its reverse (194106667451) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-154766601491 is a prime.

It is not a weakly prime, because it can be changed into another prime (154766601499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77383300745 + 77383300746.

It is an arithmetic number, because the mean of its divisors is an integer number (77383300746).

Almost surely, 2^154766601491 is an apocalyptic number.

154766601491 is a deficient number, since it is larger than the sum of its proper divisors (1).

154766601491 is an equidigital number, since it uses as much as digits as its factorization.

154766601491 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1088640, while the sum is 50.

The spelling of 154766601491 in words is "one hundred fifty-four billion, seven hundred sixty-six million, six hundred one thousand, four hundred ninety-one".