78148658180855 has 8 divisors (see below), whose sum is σ = 93778710904032. Its totient is φ = 62518712486688.

The previous prime is 78148658180843. The next prime is 78148658180909. The reversal of 78148658180855 is 55808185684187.

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

It is a cyclic number.

It is not a de Polignac number, because 78148658180855 - 2¹⁰ = 78148658179831 is a prime.

It is a super-2 number, since 2×78148658180855² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25142027 + ... + 28078796.

It is an arithmetic number, because the mean of its divisors is an integer number (11722338863004).

Almost surely, 2^{78148658180855} is an apocalyptic number.

78148658180855 is a deficient number, since it is larger than the sum of its proper divisors (15630052723177).

78148658180855 is a wasteful number, since it uses less digits than its factorization.

78148658180855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53514505.

The product of its (nonzero) digits is 688128000, while the sum is 74.

The spelling of 78148658180855 in words is "seventy-eight trillion, one hundred forty-eight billion, six hundred fifty-eight million, one hundred eighty thousand, eight hundred fifty-five".