78218355233378 has 32 divisors (see below), whose sum is σ = 119074887060480. Its totient is φ = 38527610168320.

The previous prime is 78218355233339. The next prime is 78218355233413. The reversal of 78218355233378 is 87333255381287.

It is a super-2 number, since 2×78218355233378² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3995411126 + ... + 3995430702.

It is an arithmetic number, because the mean of its divisors is an integer number (3721090220640).

Almost surely, 2^{78218355233378} is an apocalyptic number.

78218355233378 is a deficient number, since it is larger than the sum of its proper divisors (40856531827102).

78218355233378 is a wasteful number, since it uses less digits than its factorization.

78218355233378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40642.

The product of its digits is 203212800, while the sum is 65.

The spelling of 78218355233378 in words is "seventy-eight trillion, two hundred eighteen billion, three hundred fifty-five million, two hundred thirty-three thousand, three hundred seventy-eight".