78858276851827 has 8 divisors (see below), whose sum is σ = 88802282437632. Its totient is φ = 69376783153800.

The previous prime is 78858276851807. The next prime is 78858276851891. The reversal of 78858276851827 is 72815867285887.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-78858276851827 is a prime.

It is a super-2 number, since 2×78858276851827² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78858276851807) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 115627971583 + ... + 115627972264.

It is an arithmetic number, because the mean of its divisors is an integer number (11100285304704).

Almost surely, 2^{78858276851827} is an apocalyptic number.

78858276851827 is a deficient number, since it is larger than the sum of its proper divisors (9944005585805).

78858276851827 is a wasteful number, since it uses less digits than its factorization.

78858276851827 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231255943889.

The product of its digits is 6743654400, while the sum is 82.

The spelling of 78858276851827 in words is "seventy-eight trillion, eight hundred fifty-eight billion, two hundred seventy-six million, eight hundred fifty-one thousand, eight hundred twenty-seven".