78369500357 has 2 divisors, whose sum is σ = 78369500358. Its totient is φ = 78369500356.

The previous prime is 78369500281. The next prime is 78369500509. The reversal of 78369500357 is 75300596387.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49251149476 + 29118350881 = 221926^2 + 170641^2 .

It is a cyclic number.

It is not a de Polignac number, because 78369500357 - 2²² = 78365306053 is a prime.

It is a super-2 number, since 2×78369500357² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 78369500299 and 78369500308.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78369500257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39184750178 + 39184750179.

It is an arithmetic number, because the mean of its divisors is an integer number (39184750179).

Almost surely, 2^78369500357 is an apocalyptic number.

It is an amenable number.

78369500357 is a deficient number, since it is larger than the sum of its proper divisors (1).

78369500357 is an equidigital number, since it uses as much as digits as its factorization.

78369500357 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4762800, while the sum is 53.

The spelling of 78369500357 in words is "seventy-eight billion, three hundred sixty-nine million, five hundred thousand, three hundred fifty-seven".