1040653564621 has 8 divisors (see below), whose sum is σ = 1135265864544. Its totient is φ = 946042503120.

The previous prime is 1040653564583. The next prime is 1040653564679. The reversal of 1040653564621 is 1264653560401.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1040653564621 - 2⁷ = 1040653564493 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1040653564121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2844655 + ... + 3189571.

It is an arithmetic number, because the mean of its divisors is an integer number (141908233068).

Almost surely, 2^{1040653564621} is an apocalyptic number.

1040653564621 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1040653564621 is a deficient number, since it is larger than the sum of its proper divisors (94612299923).

1040653564621 is a wasteful number, since it uses less digits than its factorization.

1040653564621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 619211.

The product of its (nonzero) digits is 518400, while the sum is 43.

The spelling of 1040653564621 in words is "one trillion, forty billion, six hundred fifty-three million, five hundred sixty-four thousand, six hundred twenty-one".