461456871788078 has 4 divisors (see below), whose sum is σ = 692185307682120. Its totient is φ = 230728435894038.

The previous prime is 461456871788071. The next prime is 461456871788089. The reversal of 461456871788078 is 870887178654164.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 461456871787993 and 461456871788011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (461456871788071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115364217947018 + ... + 115364217947021.

It is an arithmetic number, because the mean of its divisors is an integer number (173046326920530).

Almost surely, 2^{461456871788078} is an apocalyptic number.

461456871788078 is a deficient number, since it is larger than the sum of its proper divisors (230728435894042).

461456871788078 is a wasteful number, since it uses less digits than its factorization.

461456871788078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230728435894041.

The product of its (nonzero) digits is 4046192640, while the sum is 80.

The spelling of 461456871788078 in words is "four hundred sixty-one trillion, four hundred fifty-six billion, eight hundred seventy-one million, seven hundred eighty-eight thousand, seventy-eight".