87613045678 has 4 divisors (see below), whose sum is σ = 131419568520. Its totient is φ = 43806522838.

The previous prime is 87613045643. The next prime is 87613045717. The reversal of 87613045678 is 87654031678.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 87654031678 = 2 ⋅43827015839.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21903261418 + ... + 21903261421.

It is an arithmetic number, because the mean of its divisors is an integer number (32854892130).

Almost surely, 2^87613045678 is an apocalyptic number.

87613045678 is a deficient number, since it is larger than the sum of its proper divisors (43806522842).

87613045678 is a wasteful number, since it uses less digits than its factorization.

87613045678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43806522841.

The product of its (nonzero) digits is 6773760, while the sum is 55.

The spelling of 87613045678 in words is "eighty-seven billion, six hundred thirteen million, forty-five thousand, six hundred seventy-eight".