461155768987 has 2 divisors, whose sum is σ = 461155768988. Its totient is φ = 461155768986.

The previous prime is 461155768933. The next prime is 461155768991. The reversal of 461155768987 is 789867551164.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 461155768987 - 2³¹ = 459008285339 is a prime.

It is a super-2 number, since 2×461155768987² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (461155768687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 230577884493 + 230577884494.

It is an arithmetic number, because the mean of its divisors is an integer number (230577884494).

Almost surely, 2^461155768987 is an apocalyptic number.

461155768987 is a deficient number, since it is larger than the sum of its proper divisors (1).

461155768987 is an equidigital number, since it uses as much as digits as its factorization.

461155768987 is an evil number, because the sum of its binary digits is even.

The product of its digits is 101606400, while the sum is 67.

The spelling of 461155768987 in words is "four hundred sixty-one billion, one hundred fifty-five million, seven hundred sixty-eight thousand, nine hundred eighty-seven".