340308437998 has 4 divisors (see below), whose sum is σ = 510462657000. Its totient is φ = 170154218998.

The previous prime is 340308437981. The next prime is 340308438007. The reversal of 340308437998 is 899734803043.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 899734803043 = 37 ⋅24317156839.

It is a super-2 number, since 2×340308437998² (a number of 24 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85077109498 + ... + 85077109501.

It is an arithmetic number, because the mean of its divisors is an integer number (127615664250).

Almost surely, 2^340308437998 is an apocalyptic number.

340308437998 is a deficient number, since it is larger than the sum of its proper divisors (170154219002).

340308437998 is a wasteful number, since it uses less digits than its factorization.

340308437998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170154219001.

The product of its (nonzero) digits is 15676416, while the sum is 58.

The spelling of 340308437998 in words is "three hundred forty billion, three hundred eight million, four hundred thirty-seven thousand, nine hundred ninety-eight".