78148681631870 has 8 divisors (see below), whose sum is σ = 140667626937384. Its totient is φ = 31259472652744.

The previous prime is 78148681631849. The next prime is 78148681631899. The reversal of 78148681631870 is 7813618684187.

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

It is a super-2 number, since 2×78148681631870² (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 78148681631870.

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, 3907434081584 + ... + 3907434081603.

It is an arithmetic number, because the mean of its divisors is an integer number (17583453367173).

Almost surely, 2^{78148681631870} is an apocalyptic number.

78148681631870 is a deficient number, since it is larger than the sum of its proper divisors (62518945305514).

78148681631870 is a wasteful number, since it uses less digits than its factorization.

78148681631870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7814868163194.

The product of its (nonzero) digits is 86704128, while the sum is 68.

The spelling of 78148681631870 in words is "seventy-eight trillion, one hundred forty-eight billion, six hundred eighty-one million, six hundred thirty-one thousand, eight hundred seventy".