78341617401 has 16 divisors (see below), whose sum is σ = 104808887040. Its totient is φ = 52051346640.

The previous prime is 78341617391. The next prime is 78341617421. The reversal of 78341617401 is 10471614387.

It is not a de Polignac number, because 78341617401 - 2¹⁷ = 78341486329 is a prime.

It is a super-2 number, since 2×78341617401² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78341617421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1023406 + ... + 1097288.

It is an arithmetic number, because the mean of its divisors is an integer number (6550555440).

Almost surely, 2^78341617401 is an apocalyptic number.

It is an amenable number.

78341617401 is a deficient number, since it is larger than the sum of its proper divisors (26467269639).

78341617401 is a wasteful number, since it uses less digits than its factorization.

78341617401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75076.

The product of its (nonzero) digits is 112896, while the sum is 42.

The spelling of 78341617401 in words is "seventy-eight billion, three hundred forty-one million, six hundred seventeen thousand, four hundred one".