78898579406342 has 8 divisors (see below), whose sum is σ = 118347907969656. Its totient is φ = 39449276749792.

The previous prime is 78898579406329. The next prime is 78898579406363. The reversal of 78898579406342 is 24360497589887.

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

It is a super-2 number, since 2×78898579406342² (a number of 29 digits) contains 22 as substring.

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, 5763593 + ... + 13820859.

It is an arithmetic number, because the mean of its divisors is an integer number (14793488496207).

Almost surely, 2^{78898579406342} is an apocalyptic number.

78898579406342 is a deficient number, since it is larger than the sum of its proper divisors (39449328563314).

78898579406342 is a wasteful number, since it uses less digits than its factorization.

78898579406342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12953382.

The product of its (nonzero) digits is 5852528640, while the sum is 80.

The spelling of 78898579406342 in words is "seventy-eight trillion, eight hundred ninety-eight billion, five hundred seventy-nine million, four hundred six thousand, three hundred forty-two".