10611665840 has 40 divisors (see below), whose sum is σ = 24689373648. Its totient is φ = 4241698560.

The previous prime is 10611665821. The next prime is 10611665881. The reversal of 10611665840 is 4856611601.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×10611665840² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 10611665794 and 10611665803.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70595 + ... + 161885.

Almost surely, 2^10611665840 is an apocalyptic number.

10611665840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10611665840 is an abundant number, since it is smaller than the sum of its proper divisors (14077707808).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

10611665840 is a wasteful number, since it uses less digits than its factorization.

10611665840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92757 (or 92751 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 38.

The spelling of 10611665840 in words is "ten billion, six hundred eleven million, six hundred sixty-five thousand, eight hundred forty".