8357072856778 has 16 divisors (see below), whose sum is σ = 12602845689984. Its totient is φ = 4156166226240.

The previous prime is 8357072856773. The next prime is 8357072856799. The reversal of 8357072856778 is 8776582707538.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 8357072856778.

It is not an unprimeable number, because it can be changed into a prime (8357072856773) 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, 10084050 + ... + 10881277.

It is an arithmetic number, because the mean of its divisors is an integer number (787677855624).

Almost surely, 2^{8357072856778} is an apocalyptic number.

8357072856778 is a deficient number, since it is larger than the sum of its proper divisors (4245772833206).

8357072856778 is a wasteful number, since it uses less digits than its factorization.

8357072856778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20966397.

The product of its (nonzero) digits is 1106380800, while the sum is 73.

The spelling of 8357072856778 in words is "eight trillion, three hundred fifty-seven billion, seventy-two million, eight hundred fifty-six thousand, seven hundred seventy-eight".