78148681455683 has 32 divisors (see below), whose sum is σ = 84951367764480. Its totient is φ = 71618424629760.

The previous prime is 78148681455679. The next prime is 78148681455721. The reversal of 78148681455683 is 38655418684187.

It is a cyclic number.

It is not a de Polignac number, because 78148681455683 - 2² = 78148681455679 is a prime.

It is a super-2 number, since 2×78148681455683² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 78148681455683.

It is not an unprimeable number, because it can be changed into a prime (78148681455283) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 49236410 + ... + 50798832.

It is an arithmetic number, because the mean of its divisors is an integer number (2654730242640).

Almost surely, 2^{78148681455683} is an apocalyptic number.

78148681455683 is a deficient number, since it is larger than the sum of its proper divisors (6802686308797).

78148681455683 is a wasteful number, since it uses less digits than its factorization.

78148681455683 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1562987.

The product of its digits is 1238630400, while the sum is 74.

The spelling of 78148681455683 in words is "seventy-eight trillion, one hundred forty-eight billion, six hundred eighty-one million, four hundred fifty-five thousand, six hundred eighty-three".