65340891522 has 12 divisors (see below), whose sum is σ = 141571931670. Its totient is φ = 21780297168.

The previous prime is 65340891493. The next prime is 65340891557. The reversal of 65340891522 is 22519804356.

65340891522 is a `hidden beast` number, since 6 + 5 + 3 + 40 + 89 + 1 + 522 = 666.

It can be written as a sum of positive squares in only one way, i.e., 59946135921 + 5394755601 = 244839^2 + 73449^2 .

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 5 ways as a sum of consecutive naturals, for example, 1815024747 + ... + 1815024782.

Almost surely, 2^65340891522 is an apocalyptic number.

65340891522 is an abundant number, since it is smaller than the sum of its proper divisors (76231040148).

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

65340891522 is a wasteful number, since it uses less digits than its factorization.

65340891522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3630049537 (or 3630049534 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 45.

The spelling of 65340891522 in words is "sixty-five billion, three hundred forty million, eight hundred ninety-one thousand, five hundred twenty-two".