10721601625663 has 2 divisors, whose sum is σ = 10721601625664. Its totient is φ = 10721601625662.

The previous prime is 10721601625589. The next prime is 10721601625739. The reversal of 10721601625663 is 36652610612701.

It is a weak prime.

It is an emirp because it is prime and its reverse (36652610612701) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 10721601625663 - 2²¹ = 10721599528511 is a prime.

It is a super-2 number, since 2×10721601625663² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10721601626663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5360800812831 + 5360800812832.

It is an arithmetic number, because the mean of its divisors is an integer number (5360800812832).

Almost surely, 2^{10721601625663} is an apocalyptic number.

10721601625663 is a deficient number, since it is larger than the sum of its proper divisors (1).

10721601625663 is an equidigital number, since it uses as much as digits as its factorization.

10721601625663 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 544320, while the sum is 46.

The spelling of 10721601625663 in words is "ten trillion, seven hundred twenty-one billion, six hundred one million, six hundred twenty-five thousand, six hundred sixty-three".