461401770645 has 24 divisors (see below), whose sum is σ = 808008056856. Its totient is φ = 243544025088.

The previous prime is 461401770637. The next prime is 461401770647. The reversal of 461401770645 is 546077104164.

It can be written as a sum of positive squares in 4 ways, for example, as 3335409009 + 458066361636 = 57753^2 + 676806^2 .

It is not a de Polignac number, because 461401770645 - 2³ = 461401770637 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 461401770645.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (461401770647) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 52848072 + ... + 52856801.

It is an arithmetic number, because the mean of its divisors is an integer number (33667002369).

Almost surely, 2^461401770645 is an apocalyptic number.

461401770645 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

461401770645 is a deficient number, since it is larger than the sum of its proper divisors (346606286211).

461401770645 is a wasteful number, since it uses less digits than its factorization.

461401770645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105704981 (or 105704978 counting only the distinct ones).

The product of its (nonzero) digits is 564480, while the sum is 45.

The spelling of 461401770645 in words is "four hundred sixty-one billion, four hundred one million, seven hundred seventy thousand, six hundred forty-five".