940907736661 has 4 divisors (see below), whose sum is σ = 945016504300. Its totient is φ = 936798969024.

The previous prime is 940907736631. The next prime is 940907736679. The reversal of 940907736661 is 166637709049.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 166637709049 = 7 ⋅23805387007.

It can be written as a sum of positive squares in 2 ways, for example, as 785518827025 + 155388909636 = 886295^2 + 394194^2 .

It is a cyclic number.

It is not a de Polignac number, because 940907736661 - 2¹⁵ = 940907703893 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 940907736596 and 940907736605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (940907736611) 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, 2054383476 + ... + 2054383933.

It is an arithmetic number, because the mean of its divisors is an integer number (236254126075).

Almost surely, 2^940907736661 is an apocalyptic number.

It is an amenable number.

940907736661 is a deficient number, since it is larger than the sum of its proper divisors (4108767639).

940907736661 is a wasteful number, since it uses less digits than its factorization.

940907736661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4108767638.

The product of its (nonzero) digits is 10287648, while the sum is 58.

The spelling of 940907736661 in words is "nine hundred forty billion, nine hundred seven million, seven hundred thirty-six thousand, six hundred sixty-one".