10065131161621 has 4 divisors (see below), whose sum is σ = 10279282888512. Its totient is φ = 9850979434732.

The previous prime is 10065131161601. The next prime is 10065131161681. The reversal of 10065131161621 is 12616113156001.

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 10065131161621 - 2³¹ = 10062983677973 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10065131161601) 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, 107075863375 + ... + 107075863468.

It is an arithmetic number, because the mean of its divisors is an integer number (2569820722128).

Almost surely, 2^{10065131161621} is an apocalyptic number.

It is an amenable number.

10065131161621 is a deficient number, since it is larger than the sum of its proper divisors (214151726891).

10065131161621 is an equidigital number, since it uses as much as digits as its factorization.

10065131161621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214151726890.

The product of its (nonzero) digits is 6480, while the sum is 34.

The spelling of 10065131161621 in words is "ten trillion, sixty-five billion, one hundred thirty-one million, one hundred sixty-one thousand, six hundred twenty-one".