10111715650661 has 4 divisors (see below), whose sum is σ = 10254134181024. Its totient is φ = 9969297120300.

The previous prime is 10111715650657. The next prime is 10111715650693. The reversal of 10111715650661 is 16605651711101.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 10111715650661 - 2² = 10111715650657 is a prime.

It is a super-2 number, since 2×10111715650661² (a number of 27 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 (10111718650661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71209265075 + ... + 71209265216.

It is an arithmetic number, because the mean of its divisors is an integer number (2563533545256).

Almost surely, 2^{10111715650661} is an apocalyptic number.

It is an amenable number.

10111715650661 is a deficient number, since it is larger than the sum of its proper divisors (142418530363).

10111715650661 is an equidigital number, since it uses as much as digits as its factorization.

10111715650661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142418530362.

The product of its (nonzero) digits is 37800, while the sum is 41.

The spelling of 10111715650661 in words is "ten trillion, one hundred eleven billion, seven hundred fifteen million, six hundred fifty thousand, six hundred sixty-one".