78341617402 has 8 divisors (see below), whose sum is σ = 119167530912. Its totient is φ = 38619107100.

The previous prime is 78341617391. The next prime is 78341617421. The reversal of 78341617402 is 20471614387.

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

It is a super-2 number, since 2×78341617402² (a number of 23 digits) contains 22 as substring.

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, 275850624 + ... + 275850907.

It is an arithmetic number, because the mean of its divisors is an integer number (14895941364).

Almost surely, 2^78341617402 is an apocalyptic number.

78341617402 is a deficient number, since it is larger than the sum of its proper divisors (40825913510).

78341617402 is a wasteful number, since it uses less digits than its factorization.

78341617402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 551701604.

The product of its (nonzero) digits is 225792, while the sum is 43.

The spelling of 78341617402 in words is "seventy-eight billion, three hundred forty-one million, six hundred seventeen thousand, four hundred two".