10611643654 has 4 divisors (see below), whose sum is σ = 15917465484. Its totient is φ = 5305821826.

The previous prime is 10611643649. The next prime is 10611643667. The reversal of 10611643654 is 45634611601.

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

It is a super-2 number, since 2×10611643654² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2652910912 + ... + 2652910915.

It is an arithmetic number, because the mean of its divisors is an integer number (3979366371).

Almost surely, 2^10611643654 is an apocalyptic number.

10611643654 is a deficient number, since it is larger than the sum of its proper divisors (5305821830).

10611643654 is an equidigital number, since it uses as much as digits as its factorization.

10611643654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5305821829.

The product of its (nonzero) digits is 51840, while the sum is 37.

The spelling of 10611643654 in words is "ten billion, six hundred eleven million, six hundred forty-three thousand, six hundred fifty-four".