61353020636099 has 4 divisors (see below), whose sum is σ = 62129641150560. Its totient is φ = 60576400121640.

The previous prime is 61353020636069. The next prime is 61353020636197. The reversal of 61353020636099 is 99063602035316.

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

It is a cyclic number.

It is not a de Polignac number, because 61353020636099 - 2¹² = 61353020632003 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 61353020636099.

It is not an unprimeable number, because it can be changed into a prime (61353020636069) 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, 388310257112 + ... + 388310257269.

It is an arithmetic number, because the mean of its divisors is an integer number (15532410287640).

Almost surely, 2^{61353020636099} is an apocalyptic number.

61353020636099 is a deficient number, since it is larger than the sum of its proper divisors (776620514461).

61353020636099 is an equidigital number, since it uses as much as digits as its factorization.

61353020636099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 776620514460.

The product of its (nonzero) digits is 4723920, while the sum is 53.

The spelling of 61353020636099 in words is "sixty-one trillion, three hundred fifty-three billion, twenty million, six hundred thirty-six thousand, ninety-nine".