78145854358311 has 24 divisors (see below), whose sum is σ = 118855354849920. Its totient is φ = 49339867013136.

The previous prime is 78145854358309. The next prime is 78145854358337. The reversal of 78145854358311 is 11385345854187.

78145854358311 is a `hidden beast` number, since 7 + 8 + 1 + 4 + 5 + 8 + 5 + 43 + 583 + 1 + 1 = 666.

It is not a de Polignac number, because 78145854358311 - 2¹ = 78145854358309 is a prime.

It is a super-2 number, since 2×78145854358311² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78145854858311) 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, 70790611 + ... + 71886036.

It is an arithmetic number, because the mean of its divisors is an integer number (4952306452080).

Almost surely, 2^{78145854358311} is an apocalyptic number.

78145854358311 is a deficient number, since it is larger than the sum of its proper divisors (40709500491609).

78145854358311 is a wasteful number, since it uses less digits than its factorization.

78145854358311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142679875 (or 142679872 counting only the distinct ones).

The product of its digits is 64512000, while the sum is 63.

The spelling of 78145854358311 in words is "seventy-eight trillion, one hundred forty-five billion, eight hundred fifty-four million, three hundred fifty-eight thousand, three hundred eleven".