87991525226 has 8 divisors (see below), whose sum is σ = 143986132224. Its totient is φ = 39996147820.

The previous prime is 87991525213. The next prime is 87991525253. The reversal of 87991525226 is 62252519978.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1999807370 + ... + 1999807413.

It is an arithmetic number, because the mean of its divisors is an integer number (17998266528).

Almost surely, 2^87991525226 is an apocalyptic number.

87991525226 is a deficient number, since it is larger than the sum of its proper divisors (55994606998).

87991525226 is a wasteful number, since it uses less digits than its factorization.

87991525226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3999614796.

The product of its digits is 5443200, while the sum is 56.

The spelling of 87991525226 in words is "eighty-seven billion, nine hundred ninety-one million, five hundred twenty-five thousand, two hundred twenty-six".