10313521665220 has 24 divisors (see below), whose sum is σ = 21726718524504. Its totient is φ = 4112394756096.

The previous prime is 10313521665211. The next prime is 10313521665229. The reversal of 10313521665220 is 2256612531301.

It is an interprime number because it is at equal distance from previous prime (10313521665211) and next prime (10313521665229).

It can be written as a sum of positive squares in 4 ways, for example, as 68004122176 + 10245517543044 = 260776^2 + 3200862^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 10313521665220.

It is not an unprimeable number, because it can be changed into a prime (10313521665229) 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, 813362877 + ... + 813375556.

It is an arithmetic number, because the mean of its divisors is an integer number (905279938521).

Almost surely, 2^{10313521665220} is an apocalyptic number.

10313521665220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10313521665220 is an abundant number, since it is smaller than the sum of its proper divisors (11413196859284).

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

10313521665220 is a wasteful number, since it uses less digits than its factorization.

10313521665220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1626738759 (or 1626738757 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 37.

The spelling of 10313521665220 in words is "ten trillion, three hundred thirteen billion, five hundred twenty-one million, six hundred sixty-five thousand, two hundred twenty".