87427019091 has 8 divisors (see below), whose sum is σ = 116598759424. Its totient is φ = 58269979080.

The previous prime is 87427019063. The next prime is 87427019101. The reversal of 87427019091 is 19091072478.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 87427019091 - 2¹⁵ = 87426986323 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 87427019091.

It is not an unprimeable number, because it can be changed into a prime (87427019011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3661195 + ... + 3684996.

It is an arithmetic number, because the mean of its divisors is an integer number (14574844928).

Almost surely, 2^87427019091 is an apocalyptic number.

87427019091 is a deficient number, since it is larger than the sum of its proper divisors (29171740333).

87427019091 is a wasteful number, since it uses less digits than its factorization.

87427019091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7350161.

The product of its (nonzero) digits is 254016, while the sum is 48.

The spelling of 87427019091 in words is "eighty-seven billion, four hundred twenty-seven million, nineteen thousand, ninety-one".