99127461761 has 2 divisors, whose sum is σ = 99127461762. Its totient is φ = 99127461760.

The previous prime is 99127461739. The next prime is 99127461809. The reversal of 99127461761 is 16716472199.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 97160007025 + 1967454736 = 311705^2 + 44356^2 .

It is a cyclic number.

It is not a de Polignac number, because 99127461761 - 2¹⁸ = 99127199617 is a prime.

It is a super-2 number, since 2×99127461761² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (99127461361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49563730880 + 49563730881.

It is an arithmetic number, because the mean of its divisors is an integer number (49563730881).

Almost surely, 2^99127461761 is an apocalyptic number.

It is an amenable number.

99127461761 is a deficient number, since it is larger than the sum of its proper divisors (1).

99127461761 is an equidigital number, since it uses as much as digits as its factorization.

99127461761 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1143072, while the sum is 53.

The spelling of 99127461761 in words is "ninety-nine billion, one hundred twenty-seven million, four hundred sixty-one thousand, seven hundred sixty-one".