87028356711 has 4 divisors (see below), whose sum is σ = 116037808952. Its totient is φ = 58018904472.

The previous prime is 87028356697. The next prime is 87028356743. The reversal of 87028356711 is 11765382078.

It is a happy number.

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

It is a de Polignac number, because none of the positive numbers 2^k-87028356711 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87028356781) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14504726116 + ... + 14504726121.

It is an arithmetic number, because the mean of its divisors is an integer number (29009452238).

Almost surely, 2^87028356711 is an apocalyptic number.

87028356711 is a deficient number, since it is larger than the sum of its proper divisors (29009452241).

87028356711 is a wasteful number, since it uses less digits than its factorization.

87028356711 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29009452240.

The product of its (nonzero) digits is 564480, while the sum is 48.

The spelling of 87028356711 in words is "eighty-seven billion, twenty-eight million, three hundred fifty-six thousand, seven hundred eleven".