10321261443561 has 8 divisors (see below), whose sum is σ = 13890295774944. Its totient is φ = 6816534037280.

The previous prime is 10321261443553. The next prime is 10321261443589. The reversal of 10321261443561 is 16534416212301.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 10321261443561 - 2³ = 10321261443553 is a prime.

It is a super-4 number, since 4×10321261443561⁴ (a number of 53 digits) contains 4444 as substring.

It is not an unprimeable number, because it can be changed into a prime (10321261443511) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16076730900 + ... + 16076731541.

It is an arithmetic number, because the mean of its divisors is an integer number (1736286971868).

Almost surely, 2^{10321261443561} is an apocalyptic number.

It is an amenable number.

10321261443561 is a deficient number, since it is larger than the sum of its proper divisors (3569034331383).

10321261443561 is a wasteful number, since it uses less digits than its factorization.

10321261443561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32153462551.

The product of its (nonzero) digits is 103680, while the sum is 39.

Adding to 10321261443561 its reverse (16534416212301), we get a palindrome (26855677655862).

The spelling of 10321261443561 in words is "ten trillion, three hundred twenty-one billion, two hundred sixty-one million, four hundred forty-three thousand, five hundred sixty-one".