78701494833 has 20 divisors (see below), whose sum is σ = 126610003828. Its totient is φ = 48431688480.

The previous prime is 78701494811. The next prime is 78701494843. The reversal of 78701494833 is 33849410787.

78701494833 is a `hidden beast` number, since 7 + 8 + 70 + 1 + 494 + 83 + 3 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 39948816384 + 38752678449 = 199872^2 + 196857^2 .

It is not a de Polignac number, because 78701494833 - 2²¹ = 78699397681 is a prime.

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 78701494833.

It is not an unprimeable number, because it can be changed into a prime (78701494843) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 37369078 + ... + 37371183.

Almost surely, 2^78701494833 is an apocalyptic number.

It is an amenable number.

78701494833 is a deficient number, since it is larger than the sum of its proper divisors (47908508995).

78701494833 is a wasteful number, since it uses less digits than its factorization.

78701494833 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74740286 (or 74740277 counting only the distinct ones).

The product of its (nonzero) digits is 4064256, while the sum is 54.

The spelling of 78701494833 in words is "seventy-eight billion, seven hundred one million, four hundred ninety-four thousand, eight hundred thirty-three".