61245408541 has 4 divisors (see below), whose sum is σ = 61252190272. Its totient is φ = 61238626812.

The previous prime is 61245408503. The next prime is 61245408557. The reversal of 61245408541 is 14580454216.

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 61245408541 - 2²⁷ = 61111190813 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 61245408494 and 61245408503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61245408041) 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, 3377301 + ... + 3395386.

It is an arithmetic number, because the mean of its divisors is an integer number (15313047568).

Almost surely, 2^61245408541 is an apocalyptic number.

It is an amenable number.

61245408541 is a deficient number, since it is larger than the sum of its proper divisors (6781731).

61245408541 is an equidigital number, since it uses as much as digits as its factorization.

61245408541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6781730.

The product of its (nonzero) digits is 153600, while the sum is 40.

The spelling of 61245408541 in words is "sixty-one billion, two hundred forty-five million, four hundred eight thousand, five hundred forty-one".