340781713885 has 4 divisors (see below), whose sum is σ = 408938056668. Its totient is φ = 272625371104.

The previous prime is 340781713837. The next prime is 340781713913. The reversal of 340781713885 is 588317187043.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 588317187043 = 4877 ⋅120630959.

It can be written as a sum of positive squares in 2 ways, for example, as 259974555129 + 80807158756 = 509877^2 + 284266^2 .

It is a cyclic number.

It is not a de Polignac number, because 340781713885 - 2⁷ = 340781713757 is a prime.

It is a super-2 number, since 2×340781713885² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34078171384 + ... + 34078171393.

It is an arithmetic number, because the mean of its divisors is an integer number (102234514167).

Almost surely, 2^340781713885 is an apocalyptic number.

It is an amenable number.

340781713885 is a deficient number, since it is larger than the sum of its proper divisors (68156342783).

340781713885 is an equidigital number, since it uses as much as digits as its factorization.

340781713885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68156342782.

The product of its (nonzero) digits is 4515840, while the sum is 55.

The spelling of 340781713885 in words is "three hundred forty billion, seven hundred eighty-one million, seven hundred thirteen thousand, eight hundred eighty-five".