61228144301 has 4 divisors (see below), whose sum is σ = 61228938204. Its totient is φ = 61227350400.

The previous prime is 61228144297. The next prime is 61228144321. The reversal of 61228144301 is 10344182216.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5213562025 + 56014582276 = 72205^2 + 236674^2 .

It is a cyclic number.

It is not a de Polignac number, because 61228144301 - 2² = 61228144297 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61228144321) 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, 267110 + ... + 440231.

It is an arithmetic number, because the mean of its divisors is an integer number (15307234551).

Almost surely, 2^61228144301 is an apocalyptic number.

It is an amenable number.

61228144301 is a deficient number, since it is larger than the sum of its proper divisors (793903).

61228144301 is an equidigital number, since it uses as much as digits as its factorization.

61228144301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 793902.

The product of its (nonzero) digits is 9216, while the sum is 32.

The spelling of 61228144301 in words is "sixty-one billion, two hundred twenty-eight million, one hundred forty-four thousand, three hundred one".