340123566651557 has 32 divisors (see below), whose sum is σ = 376669813223424. Its totient is φ = 305224609536000.

The previous prime is 340123566651511. The next prime is 340123566651599. The reversal of 340123566651557 is 755156665321043.

It is a cyclic number.

It is not a de Polignac number, because 340123566651557 - 2⁶ = 340123566651493 is a prime.

It is a super-2 number, since 2×340123566651557² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 340123566651496 and 340123566651505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (340123566651157) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5660882 + ... + 26688812.

It is an arithmetic number, because the mean of its divisors is an integer number (11770931663232).

Almost surely, 2^{340123566651557} is an apocalyptic number.

It is an amenable number.

340123566651557 is a deficient number, since it is larger than the sum of its proper divisors (36546246571867).

340123566651557 is a wasteful number, since it uses less digits than its factorization.

340123566651557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21028269.

The product of its (nonzero) digits is 68040000, while the sum is 59.

The spelling of 340123566651557 in words is "three hundred forty trillion, one hundred twenty-three billion, five hundred sixty-six million, six hundred fifty-one thousand, five hundred fifty-seven".