10510661215 has 4 divisors (see below), whose sum is σ = 12612793464. Its totient is φ = 8408528968.

The previous prime is 10510661209. The next prime is 10510661219. The reversal of 10510661215 is 51216601501.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 10510661215 - 2²¹ = 10508564063 is a prime.

It is a super-2 number, since 2×10510661215² (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 (10510661219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1051066117 + ... + 1051066126.

It is an arithmetic number, because the mean of its divisors is an integer number (3153198366).

Almost surely, 2^10510661215 is an apocalyptic number.

10510661215 is a deficient number, since it is larger than the sum of its proper divisors (2102132249).

10510661215 is an equidigital number, since it uses as much as digits as its factorization.

10510661215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2102132248.

The product of its (nonzero) digits is 1800, while the sum is 28.

The spelling of 10510661215 in words is "ten billion, five hundred ten million, six hundred sixty-one thousand, two hundred fifteen".