78433133342131 has 4 divisors (see below), whose sum is σ = 79194620073712. Its totient is φ = 77671646610552.

The previous prime is 78433133342107. The next prime is 78433133342167. The reversal of 78433133342131 is 13124333133487.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-78433133342131 is a prime.

It is a super-2 number, since 2×78433133342131² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78433133340131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 380743365636 + ... + 380743365841.

It is an arithmetic number, because the mean of its divisors is an integer number (19798655018428).

Almost surely, 2^{78433133342131} is an apocalyptic number.

78433133342131 is a deficient number, since it is larger than the sum of its proper divisors (761486731581).

78433133342131 is a wasteful number, since it uses less digits than its factorization.

78433133342131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 761486731580.

The product of its digits is 1306368, while the sum is 46.

The spelling of 78433133342131 in words is "seventy-eight trillion, four hundred thirty-three billion, one hundred thirty-three million, three hundred forty-two thousand, one hundred thirty-one".