961000371811 has 4 divisors (see below), whose sum is σ = 979132454352. Its totient is φ = 942868289272.

The previous prime is 961000371809. The next prime is 961000371827. The reversal of 961000371811 is 118173000169.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 961000371811 - 2¹ = 961000371809 is a prime.

It is a super-3 number, since 3×961000371811³ (a number of 37 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (961000371871) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9066041191 + ... + 9066041296.

It is an arithmetic number, because the mean of its divisors is an integer number (244783113588).

Almost surely, 2^961000371811 is an apocalyptic number.

961000371811 is a deficient number, since it is larger than the sum of its proper divisors (18132082541).

961000371811 is a wasteful number, since it uses less digits than its factorization.

961000371811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18132082540.

The product of its (nonzero) digits is 9072, while the sum is 37.

The spelling of 961000371811 in words is "nine hundred sixty-one billion, three hundred seventy-one thousand, eight hundred eleven".