78146345641506 has 8 divisors (see below), whose sum is σ = 156292691283024. Its totient is φ = 26048781880500.

The previous prime is 78146345641499. The next prime is 78146345641517. The reversal of 78146345641506 is 60514654364187.

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

78146345641506 is an admirable number.

It is a super-2 number, since 2×78146345641506² (a number of 29 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 78146345641506.

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, 6512195470120 + ... + 6512195470131.

It is an arithmetic number, because the mean of its divisors is an integer number (19536586410378).

Almost surely, 2^{78146345641506} is an apocalyptic number.

78146345641506 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

78146345641506 is a wasteful number, since it uses less digits than its factorization.

78146345641506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13024390940256.

The product of its (nonzero) digits is 58060800, while the sum is 60.

The spelling of 78146345641506 in words is "seventy-eight trillion, one hundred forty-six billion, three hundred forty-five million, six hundred forty-one thousand, five hundred six".