68398217407 has 32 divisors (see below), whose sum is σ = 75073388544. Its totient is φ = 61939987200.

The previous prime is 68398217399. The next prime is 68398217429. The reversal of 68398217407 is 70471289386.

It is not a de Polignac number, because 68398217407 - 2³ = 68398217399 is a prime.

It is a super-2 number, since 2×68398217407² (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 (68398217207) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 112682098 + ... + 112682704.

It is an arithmetic number, because the mean of its divisors is an integer number (2346043392).

Almost surely, 2^68398217407 is an apocalyptic number.

68398217407 is a deficient number, since it is larger than the sum of its proper divisors (6675171137).

68398217407 is a wasteful number, since it uses less digits than its factorization.

68398217407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1399.

The product of its (nonzero) digits is 4064256, while the sum is 55.

The spelling of 68398217407 in words is "sixty-eight billion, three hundred ninety-eight million, two hundred seventeen thousand, four hundred seven".