68913520405 has 8 divisors (see below), whose sum is σ = 84455718912. Its totient is φ = 53957820048.

The previous prime is 68913520363. The next prime is 68913520409. The reversal of 68913520405 is 50402531986.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 68913520405 - 2¹⁵ = 68913487637 is a prime.

It is a super-2 number, since 2×68913520405² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68913520409) 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, 146624277 + ... + 146624746.

It is an arithmetic number, because the mean of its divisors is an integer number (10556964864).

Almost surely, 2^68913520405 is an apocalyptic number.

It is an amenable number.

68913520405 is a deficient number, since it is larger than the sum of its proper divisors (15542198507).

68913520405 is a wasteful number, since it uses less digits than its factorization.

68913520405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 293249075.

The product of its (nonzero) digits is 259200, while the sum is 43.

The spelling of 68913520405 in words is "sixty-eight billion, nine hundred thirteen million, five hundred twenty thousand, four hundred five".