78495390213 has 32 divisors (see below), whose sum is σ = 112775308800. Its totient is φ = 48404091456.

The previous prime is 78495390163. The next prime is 78495390227. The reversal of 78495390213 is 31209359487.

It is a de Polignac number, because none of the positive numbers 2^k-78495390213 is a prime.

It is a super-2 number, since 2×78495390213² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78495390713) 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, 8689183 + ... + 8698211.

It is an arithmetic number, because the mean of its divisors is an integer number (3524228400).

Almost surely, 2^78495390213 is an apocalyptic number.

It is an amenable number.

78495390213 is a deficient number, since it is larger than the sum of its proper divisors (34279918587).

78495390213 is a wasteful number, since it uses less digits than its factorization.

78495390213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12641.

The product of its (nonzero) digits is 1632960, while the sum is 51.

The spelling of 78495390213 in words is "seventy-eight billion, four hundred ninety-five million, three hundred ninety thousand, two hundred thirteen".