10721531653 has 8 divisors (see below), whose sum is σ = 12257286080. Its totient is φ = 9186804000.

The previous prime is 10721531651. The next prime is 10721531663. The reversal of 10721531653 is 35613512701.

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

It is a cyclic number.

It is not a de Polignac number, because 10721531653 - 2¹ = 10721531651 is a prime.

It is a super-2 number, since 2×10721531653² (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 (10721531651) 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, 234183 + ... + 276196.

It is an arithmetic number, because the mean of its divisors is an integer number (1532160760).

Almost surely, 2^10721531653 is an apocalyptic number.

It is an amenable number.

10721531653 is a deficient number, since it is larger than the sum of its proper divisors (1535754427).

10721531653 is an equidigital number, since it uses as much as digits as its factorization.

10721531653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 513387.

The product of its (nonzero) digits is 18900, while the sum is 34.

The spelling of 10721531653 in words is "ten billion, seven hundred twenty-one million, five hundred thirty-one thousand, six hundred fifty-three".