65404045146 has 64 divisors (see below), whose sum is σ = 143222962176. Its totient is φ = 19746892800.

The previous prime is 65404045123. The next prime is 65404045171. The reversal of 65404045146 is 64154040456.

It is a super-2 number, since 2×65404045146² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 24485391 + ... + 24488061.

It is an arithmetic number, because the mean of its divisors is an integer number (2237858784).

Almost surely, 2^65404045146 is an apocalyptic number.

65404045146 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

65404045146 is an abundant number, since it is smaller than the sum of its proper divisors (77818917030).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

65404045146 is a wasteful number, since it uses less digits than its factorization.

65404045146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3907.

The product of its (nonzero) digits is 230400, while the sum is 39.

The spelling of 65404045146 in words is "sixty-five billion, four hundred four million, forty-five thousand, one hundred forty-six".