402144460965 has 64 divisors (see below), whose sum is σ = 777392878080. Its totient is φ = 196056599040.

The previous prime is 402144460937. The next prime is 402144460979. The reversal of 402144460965 is 569064441204.

402144460965 is a `hidden beast` number, since 40 + 2 + 144 + 460 + 9 + 6 + 5 = 666.

It is not a de Polignac number, because 402144460965 - 2¹⁸ = 402144198821 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 402144460965.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 931576 + ... + 1293105.

It is an arithmetic number, because the mean of its divisors is an integer number (12146763720).

Almost surely, 2^402144460965 is an apocalyptic number.

402144460965 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

402144460965 is a deficient number, since it is larger than the sum of its proper divisors (375248417115).

402144460965 is a wasteful number, since it uses less digits than its factorization.

402144460965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2224811 (or 2224805 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 45.

The spelling of 402144460965 in words is "four hundred two billion, one hundred forty-four million, four hundred sixty thousand, nine hundred sixty-five".