78400296807 has 16 divisors (see below), whose sum is σ = 119656468992. Its totient is φ = 44729163360.

The previous prime is 78400296797. The next prime is 78400296827. The reversal of 78400296807 is 70869200487.

It is not a de Polignac number, because 78400296807 - 2¹⁶ = 78400231271 is a prime.

It is a super-2 number, since 2×78400296807² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 78400296807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78400296827) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2945028 + ... + 2971529.

It is an arithmetic number, because the mean of its divisors is an integer number (7478529312).

Almost surely, 2^78400296807 is an apocalyptic number.

78400296807 is a deficient number, since it is larger than the sum of its proper divisors (41256172185).

78400296807 is a wasteful number, since it uses less digits than its factorization.

78400296807 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5917198.

The product of its (nonzero) digits is 1354752, while the sum is 51.

The spelling of 78400296807 in words is "seventy-eight billion, four hundred million, two hundred ninety-six thousand, eight hundred seven".