71111232087 has 32 divisors (see below), whose sum is σ = 109618790400. Its totient is φ = 40165660128.

The previous prime is 71111232053. The next prime is 71111232121. The reversal of 71111232087 is 78023211117.

It is an interprime number because it is at equal distance from previous prime (71111232053) and next prime (71111232121).

It is not a de Polignac number, because 71111232087 - 2¹⁹ = 71110707799 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71111232287) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 571114 + ... + 684392.

It is an arithmetic number, because the mean of its divisors is an integer number (3425587200).

Almost surely, 2^71111232087 is an apocalyptic number.

71111232087 is a deficient number, since it is larger than the sum of its proper divisors (38507558313).

71111232087 is a wasteful number, since it uses less digits than its factorization.

71111232087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113635.

The product of its (nonzero) digits is 4704, while the sum is 33.

The spelling of 71111232087 in words is "seventy-one billion, one hundred eleven million, two hundred thirty-two thousand, eighty-seven".