68037451535 has 4 divisors (see below), whose sum is σ = 81644941848. Its totient is φ = 54429961224.

The previous prime is 68037451523. The next prime is 68037451549. The reversal of 68037451535 is 53515473086.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68037451535 is a prime.

It is a super-2 number, since 2×68037451535² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 68037451535.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6803745149 + ... + 6803745158.

It is an arithmetic number, because the mean of its divisors is an integer number (20411235462).

Almost surely, 2^68037451535 is an apocalyptic number.

68037451535 is a deficient number, since it is larger than the sum of its proper divisors (13607490313).

68037451535 is a wasteful number, since it uses less digits than its factorization.

68037451535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13607490312.

The product of its (nonzero) digits is 1512000, while the sum is 47.

The spelling of 68037451535 in words is "sixty-eight billion, thirty-seven million, four hundred fifty-one thousand, five hundred thirty-five".