340220681508 has 24 divisors (see below), whose sum is σ = 800099034112. Its totient is φ = 112513925664.

The previous prime is 340220681501. The next prime is 340220681551. The reversal of 340220681508 is 805186022043.

It is a super-2 number, since 2×340220681508² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (340220681501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 111619435 + ... + 111622482.

Almost surely, 2^340220681508 is an apocalyptic number.

It is an amenable number.

340220681508 is an abundant number, since it is smaller than the sum of its proper divisors (459878352604).

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

340220681508 is a wasteful number, since it uses less digits than its factorization.

340220681508 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223242051 (or 223242049 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 39.

The spelling of 340220681508 in words is "three hundred forty billion, two hundred twenty million, six hundred eighty-one thousand, five hundred eight".