87457240678 has 4 divisors (see below), whose sum is σ = 131185861020. Its totient is φ = 43728620338.

The previous prime is 87457240669. The next prime is 87457240679. The reversal of 87457240678 is 87604275478.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87457240679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21864310168 + ... + 21864310171.

It is an arithmetic number, because the mean of its divisors is an integer number (32796465255).

Almost surely, 2^87457240678 is an apocalyptic number.

87457240678 is a deficient number, since it is larger than the sum of its proper divisors (43728620342).

87457240678 is a wasteful number, since it uses less digits than its factorization.

87457240678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43728620341.

The product of its (nonzero) digits is 21073920, while the sum is 58.

The spelling of 87457240678 in words is "eighty-seven billion, four hundred fifty-seven million, two hundred forty thousand, six hundred seventy-eight".