10689449501 has 2 divisors, whose sum is σ = 10689449502. Its totient is φ = 10689449500.

The previous prime is 10689449437. The next prime is 10689449509. The reversal of 10689449501 is 10594498601.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5666325625 + 5023123876 = 75275^2 + 70874^2 .

It is a cyclic number.

It is not a de Polignac number, because 10689449501 - 2⁶ = 10689449437 is a prime.

It is a super-2 number, since 2×10689449501² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10689449509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5344724750 + 5344724751.

It is an arithmetic number, because the mean of its divisors is an integer number (5344724751).

Almost surely, 2^10689449501 is an apocalyptic number.

It is an amenable number.

10689449501 is a deficient number, since it is larger than the sum of its proper divisors (1).

10689449501 is an equidigital number, since it uses as much as digits as its factorization.

10689449501 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 311040, while the sum is 47.

The spelling of 10689449501 in words is "ten billion, six hundred eighty-nine million, four hundred forty-nine thousand, five hundred one".