78452046587 has 4 divisors (see below), whose sum is σ = 79146312600. Its totient is φ = 77757780576.

The previous prime is 78452046553. The next prime is 78452046601. The reversal of 78452046587 is 78564025487.

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

It is not a de Polignac number, because 78452046587 - 2⁶ = 78452046523 is a prime.

It is a super-2 number, since 2×78452046587² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78452046887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 347132837 + ... + 347133062.

It is an arithmetic number, because the mean of its divisors is an integer number (19786578150).

Almost surely, 2^78452046587 is an apocalyptic number.

78452046587 is a deficient number, since it is larger than the sum of its proper divisors (694266013).

78452046587 is a wasteful number, since it uses less digits than its factorization.

78452046587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 694266012.

The product of its (nonzero) digits is 15052800, while the sum is 56.

The spelling of 78452046587 in words is "seventy-eight billion, four hundred fifty-two million, forty-six thousand, five hundred eighty-seven".