78165790342 has 8 divisors (see below), whose sum is σ = 117268749000. Its totient is φ = 39076207344.

The previous prime is 78165790333. The next prime is 78165790363. The reversal of 78165790342 is 24309756187.

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

It is a super-2 number, since 2×78165790342² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 78165790342.

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, 3329292 + ... + 3352687.

It is an arithmetic number, because the mean of its divisors is an integer number (14658593625).

It is a 1-persistent number, because it is pandigital, but 2⋅78165790342 = 156331580684 is not.

Almost surely, 2^78165790342 is an apocalyptic number.

78165790342 is a deficient number, since it is larger than the sum of its proper divisors (39102958658).

78165790342 is a wasteful number, since it uses less digits than its factorization.

78165790342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6687830.

The product of its (nonzero) digits is 2540160, while the sum is 52.

The spelling of 78165790342 in words is "seventy-eight billion, one hundred sixty-five million, seven hundred ninety thousand, three hundred forty-two".