99481977547 has 2 divisors, whose sum is σ = 99481977548. Its totient is φ = 99481977546.

The previous prime is 99481977503. The next prime is 99481977559. The reversal of 99481977547 is 74577918499.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 99481977547 - 2¹¹ = 99481975499 is a prime.

It is not a weakly prime, because it can be changed into another prime (99481917547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49740988773 + 49740988774.

It is an arithmetic number, because the mean of its divisors is an integer number (49740988774).

Almost surely, 2^99481977547 is an apocalyptic number.

99481977547 is a deficient number, since it is larger than the sum of its proper divisors (1).

99481977547 is an equidigital number, since it uses as much as digits as its factorization.

99481977547 is an evil number, because the sum of its binary digits is even.

The product of its digits is 160030080, while the sum is 70.

The spelling of 99481977547 in words is "ninety-nine billion, four hundred eighty-one million, nine hundred seventy-seven thousand, five hundred forty-seven".