78047274087 has 16 divisors (see below), whose sum is σ = 115648462560. Its totient is φ = 52021224000.

The previous prime is 78047274061. The next prime is 78047274101.

78047274087 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 78047274087 - 2⁸ = 78047273831 is a prime.

It is a super-2 number, since 2×78047274087² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78047274587) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 145614 + ... + 421067.

It is an arithmetic number, because the mean of its divisors is an integer number (7228028910).

Almost surely, 2^78047274087 is an apocalyptic number.

78047274087 is a deficient number, since it is larger than the sum of its proper divisors (37601188473).

78047274087 is a wasteful number, since it uses less digits than its factorization.

78047274087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 571791 (or 571785 counting only the distinct ones).

The product of its (nonzero) digits is 4917248, while the sum is 54.

The spelling of 78047274087 in words is "seventy-eight billion, forty-seven million, two hundred seventy-four thousand, eighty-seven".