74887678847 has 8 divisors (see below), whose sum is σ = 75158187456. Its totient is φ = 74617500672.

The previous prime is 74887678813. The next prime is 74887678849.

74887678847 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 74887678847 - 2³⁰ = 73813937023 is a prime.

It is a super-2 number, since 2×74887678847² (a number of 23 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 (74887678849) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 376058 + ... + 539624.

It is an arithmetic number, because the mean of its divisors is an integer number (9394773432).

Almost surely, 2^74887678847 is an apocalyptic number.

74887678847 is a deficient number, since it is larger than the sum of its proper divisors (270508609).

74887678847 is a wasteful number, since it uses less digits than its factorization.

74887678847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165217.

The product of its digits is 944111616, while the sum is 74.

The spelling of 74887678847 in words is "seventy-four billion, eight hundred eighty-seven million, six hundred seventy-eight thousand, eight hundred forty-seven".