87861280726 has 4 divisors (see below), whose sum is σ = 131791921092. Its totient is φ = 43930640362.

The previous prime is 87861280721. The next prime is 87861280781. The reversal of 87861280726 is 62708216878.

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 (87861280721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21965320180 + ... + 21965320183.

It is an arithmetic number, because the mean of its divisors is an integer number (32947980273).

Almost surely, 2^87861280726 is an apocalyptic number.

87861280726 is a deficient number, since it is larger than the sum of its proper divisors (43930640366).

87861280726 is a wasteful number, since it uses less digits than its factorization.

87861280726 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43930640365.

The product of its (nonzero) digits is 3612672, while the sum is 55.

The spelling of 87861280726 in words is "eighty-seven billion, eight hundred sixty-one million, two hundred eighty thousand, seven hundred twenty-six".