78533454131607 has 4 divisors (see below), whose sum is σ = 104711272175480. Its totient is φ = 52355636087736.

The previous prime is 78533454131551. The next prime is 78533454131609. The reversal of 78533454131607 is 70613145433587.

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

It is not a de Polignac number, because 78533454131607 - 2⁷ = 78533454131479 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78533454131609) 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, 13088909021932 + ... + 13088909021937.

It is an arithmetic number, because the mean of its divisors is an integer number (26177818043870).

Almost surely, 2^{78533454131607} is an apocalyptic number.

78533454131607 is a deficient number, since it is larger than the sum of its proper divisors (26177818043873).

78533454131607 is a wasteful number, since it uses less digits than its factorization.

78533454131607 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26177818043872.

The product of its (nonzero) digits is 25401600, while the sum is 57.

The spelling of 78533454131607 in words is "seventy-eight trillion, five hundred thirty-three billion, four hundred fifty-four million, one hundred thirty-one thousand, six hundred seven".