1087216510181 has 8 divisors (see below), whose sum is σ = 1128709258200. Its totient is φ = 1045990597120.

The previous prime is 1087216510157. The next prime is 1087216510183. The reversal of 1087216510181 is 1810156127801.

It can be written as a sum of positive squares in 4 ways, for example, as 29217064900 + 1057999445281 = 170930^2 + 1028591^2 .

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

It is not a de Polignac number, because 1087216510181 - 2²² = 1087212315877 is a prime.

It is a super-2 number, since 2×1087216510181² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1087216510183) 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, 66700436 + ... + 66716733.

It is an arithmetic number, because the mean of its divisors is an integer number (141088657275).

Almost surely, 2^{1087216510181} is an apocalyptic number.

It is an amenable number.

1087216510181 is a deficient number, since it is larger than the sum of its proper divisors (41492748019).

1087216510181 is a wasteful number, since it uses less digits than its factorization.

1087216510181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133417479.

The product of its (nonzero) digits is 26880, while the sum is 41.

The spelling of 1087216510181 in words is "one trillion, eighty-seven billion, two hundred sixteen million, five hundred ten thousand, one hundred eighty-one".