340033520021523 has 4 divisors (see below), whose sum is σ = 453378026695368. Its totient is φ = 226689013347680.

The previous prime is 340033520021521. The next prime is 340033520021549. The reversal of 340033520021523 is 325120025330043.

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

It is a cyclic number.

It is not a de Polignac number, because 340033520021523 - 2¹ = 340033520021521 is a prime.

It is not an unprimeable number, because it can be changed into a prime (340033520021521) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 56672253336918 + ... + 56672253336923.

It is an arithmetic number, because the mean of its divisors is an integer number (113344506673842).

Almost surely, 2^{340033520021523} is an apocalyptic number.

340033520021523 is a deficient number, since it is larger than the sum of its proper divisors (113344506673845).

340033520021523 is a wasteful number, since it uses less digits than its factorization.

340033520021523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113344506673844.

The product of its (nonzero) digits is 64800, while the sum is 33.

Adding to 340033520021523 its reverse (325120025330043), we get a palindrome (665153545351566).

The spelling of 340033520021523 in words is "three hundred forty trillion, thirty-three billion, five hundred twenty million, twenty-one thousand, five hundred twenty-three".