10100581009581 has 16 divisors (see below), whose sum is σ = 14313862975104. Its totient is φ = 6313522036224.

The previous prime is 10100581009553. The next prime is 10100581009601. The reversal of 10100581009581 is 18590018500101.

It is a happy number.

10100581009581 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 10100581009581 - 2¹⁹ = 10100580485293 is a prime.

It is a super-2 number, since 2×10100581009581² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10100581009511) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 376508656 + ... + 376535481.

It is an arithmetic number, because the mean of its divisors is an integer number (894616435944).

Almost surely, 2^{10100581009581} is an apocalyptic number.

It is an amenable number.

10100581009581 is a deficient number, since it is larger than the sum of its proper divisors (4213281965523).

10100581009581 is a wasteful number, since it uses less digits than its factorization.

10100581009581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 753044420.

The product of its (nonzero) digits is 14400, while the sum is 39.

Adding to 10100581009581 its reverse (18590018500101), we get a palindrome (28690599509682).

The spelling of 10100581009581 in words is "ten trillion, one hundred billion, five hundred eighty-one million, nine thousand, five hundred eighty-one".