78732491364143 has 4 divisors (see below), whose sum is σ = 82155643162608. Its totient is φ = 75309339565680.

The previous prime is 78732491364061. The next prime is 78732491364203. The reversal of 78732491364143 is 34146319423787.

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

It is a cyclic number.

It is not a de Polignac number, because 78732491364143 - 2⁴⁴ = 61140305319727 is a prime.

It is a super-2 number, since 2×78732491364143² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78732491360143) 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, 1711575899198 + ... + 1711575899243.

It is an arithmetic number, because the mean of its divisors is an integer number (20538910790652).

Almost surely, 2^{78732491364143} is an apocalyptic number.

78732491364143 is a deficient number, since it is larger than the sum of its proper divisors (3423151798465).

78732491364143 is a wasteful number, since it uses less digits than its factorization.

78732491364143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3423151798464.

The product of its digits is 73156608, while the sum is 62.

The spelling of 78732491364143 in words is "seventy-eight trillion, seven hundred thirty-two billion, four hundred ninety-one million, three hundred sixty-four thousand, one hundred forty-three".