10638660479 has 8 divisors (see below), whose sum is σ = 10961185680. Its totient is φ = 10320646336.

The previous prime is 10638660437. The next prime is 10638660499. The reversal of 10638660479 is 97406683601.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10638660479 is a prime.

It is a super-2 number, since 2×10638660479² (a number of 21 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 (10638660499) 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, 1122977 + ... + 1132410.

It is an arithmetic number, because the mean of its divisors is an integer number (1370148210).

Almost surely, 2^10638660479 is an apocalyptic number.

10638660479 is a deficient number, since it is larger than the sum of its proper divisors (322525201).

10638660479 is an equidigital number, since it uses as much as digits as its factorization.

10638660479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2255529.

The product of its (nonzero) digits is 1306368, while the sum is 50.

The spelling of 10638660479 in words is "ten billion, six hundred thirty-eight million, six hundred sixty thousand, four hundred seventy-nine".