1081700772187 has 24 divisors (see below), whose sum is σ = 1279773097200. Its totient is φ = 911356943616.

The previous prime is 1081700772151. The next prime is 1081700772233. The reversal of 1081700772187 is 7812770071801.

It is a happy number.

It is not a de Polignac number, because 1081700772187 - 2³⁹ = 531944958299 is a prime.

It is a super-3 number, since 3×1081700772187³ (a number of 37 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (49).

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 1081700772187.

It is not an unprimeable number, because it can be changed into a prime (1081700772287) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 39052239 + ... + 39079927.

It is an arithmetic number, because the mean of its divisors is an integer number (53323879050).

Almost surely, 2^{1081700772187} is an apocalyptic number.

1081700772187 is a deficient number, since it is larger than the sum of its proper divisors (198072325013).

1081700772187 is a wasteful number, since it uses less digits than its factorization.

1081700772187 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41275 (or 41268 counting only the distinct ones).

The product of its (nonzero) digits is 307328, while the sum is 49.

The spelling of 1081700772187 in words is "one trillion, eighty-one billion, seven hundred million, seven hundred seventy-two thousand, one hundred eighty-seven".