7816638580653 has 8 divisors (see below), whose sum is σ = 11911068313408. Its totient is φ = 4466650617504.

The previous prime is 7816638580643. The next prime is 7816638580657. The reversal of 7816638580653 is 3560858366187.

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

It is not a de Polignac number, because 7816638580653 - 2¹³ = 7816638572461 is a prime.

It is a super-2 number, since 2×7816638580653² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7816638580657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 186110442376 + ... + 186110442417.

It is an arithmetic number, because the mean of its divisors is an integer number (1488883539176).

Almost surely, 2^{7816638580653} is an apocalyptic number.

It is an amenable number.

7816638580653 is a deficient number, since it is larger than the sum of its proper divisors (4094429732755).

7816638580653 is a wasteful number, since it uses less digits than its factorization.

7816638580653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 372220884803.

The product of its (nonzero) digits is 174182400, while the sum is 66.

The spelling of 7816638580653 in words is "seven trillion, eight hundred sixteen billion, six hundred thirty-eight million, five hundred eighty thousand, six hundred fifty-three".