61040444235601 has 4 divisors (see below), whose sum is σ = 61165783957312. Its totient is φ = 60915104513892.

The previous prime is 61040444235599. The next prime is 61040444235623. The reversal of 61040444235601 is 10653244404016.

It is a happy number.

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 61040444235601 - 2¹ = 61040444235599 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61040444235301) 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, 62669860125 + ... + 62669861098.

It is an arithmetic number, because the mean of its divisors is an integer number (15291445989328).

Almost surely, 2^{61040444235601} is an apocalyptic number.

It is an amenable number.

61040444235601 is a deficient number, since it is larger than the sum of its proper divisors (125339721711).

61040444235601 is a wasteful number, since it uses less digits than its factorization.

61040444235601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125339721710.

The product of its (nonzero) digits is 276480, while the sum is 40.

Adding to 61040444235601 its reverse (10653244404016), we get a palindrome (71693688639617).

The spelling of 61040444235601 in words is "sixty-one trillion, forty billion, four hundred forty-four million, two hundred thirty-five thousand, six hundred one".