61504204132373 has 2 divisors, whose sum is σ = 61504204132374. Its totient is φ = 61504204132372.

The previous prime is 61504204132363. The next prime is 61504204132457. The reversal of 61504204132373 is 37323140240516.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43323684977329 + 18180519155044 = 6582073^2 + 4263862^2 .

It is a cyclic number.

It is not a de Polignac number, because 61504204132373 - 2³² = 61499909165077 is a prime.

It is a super-2 number, since 2×61504204132373² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 61504204132373.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61504204132363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30752102066186 + 30752102066187.

It is an arithmetic number, because the mean of its divisors is an integer number (30752102066187).

Almost surely, 2^{61504204132373} is an apocalyptic number.

It is an amenable number.

61504204132373 is a deficient number, since it is larger than the sum of its proper divisors (1).

61504204132373 is an equidigital number, since it uses as much as digits as its factorization.

61504204132373 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 362880, while the sum is 41.

Adding to 61504204132373 its reverse (37323140240516), we get a palindrome (98827344372889).

The spelling of 61504204132373 in words is "sixty-one trillion, five hundred four billion, two hundred four million, one hundred thirty-two thousand, three hundred seventy-three".