10165720006491 has 32 divisors (see below), whose sum is σ = 15733230686208. Its totient is φ = 5718258715680.

The previous prime is 10165720006483. The next prime is 10165720006499. The reversal of 10165720006491 is 19460002756101.

It is an interprime number because it is at equal distance from previous prime (10165720006483) and next prime (10165720006499).

It is not a de Polignac number, because 10165720006491 - 2³ = 10165720006483 is a prime.

It is a super-3 number, since 3×10165720006491³ (a number of 40 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (10165720006499) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4343041 + ... + 6260466.

It is an arithmetic number, because the mean of its divisors is an integer number (491663458944).

Almost surely, 2^{10165720006491} is an apocalyptic number.

10165720006491 is a deficient number, since it is larger than the sum of its proper divisors (5567510679717).

10165720006491 is a wasteful number, since it uses less digits than its factorization.

10165720006491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10604231.

The product of its (nonzero) digits is 90720, while the sum is 42.

The spelling of 10165720006491 in words is "ten trillion, one hundred sixty-five billion, seven hundred twenty million, six thousand, four hundred ninety-one".