78213700723293 has 24 divisors (see below), whose sum is σ = 113752526215328. Its totient is φ = 51784994678112.

The previous prime is 78213700723267. The next prime is 78213700723307. The reversal of 78213700723293 is 39232700731287.

78213700723293 is a `hidden beast` number, since 7 + 8 + 213 + 70 + 0 + 72 + 3 + 293 = 666.

It is not a de Polignac number, because 78213700723293 - 2¹⁷ = 78213700592221 is a prime.

It is a super-2 number, since 2×78213700723293² (a number of 29 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78213700723243) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 50331271 + ... + 51861972.

Almost surely, 2^{78213700723293} is an apocalyptic number.

It is an amenable number.

78213700723293 is a deficient number, since it is larger than the sum of its proper divisors (35538825492035).

78213700723293 is a wasteful number, since it uses less digits than its factorization.

78213700723293 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102193833 (or 102193830 counting only the distinct ones).

The product of its (nonzero) digits is 5334336, while the sum is 54.

The spelling of 78213700723293 in words is "seventy-eight trillion, two hundred thirteen billion, seven hundred million, seven hundred twenty-three thousand, two hundred ninety-three".