61504204132031 has 2 divisors, whose sum is σ = 61504204132032. Its totient is φ = 61504204132030.

The previous prime is 61504204131991. The next prime is 61504204132039. The reversal of 61504204132031 is 13023140240516.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61504204132031 - 2¹⁴ = 61504204115647 is a prime.

It is a super-2 number, since 2×61504204132031² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61504204132039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30752102066015 + 30752102066016.

It is an arithmetic number, because the mean of its divisors is an integer number (30752102066016).

Almost surely, 2^{61504204132031} is an apocalyptic number.

61504204132031 is a deficient number, since it is larger than the sum of its proper divisors (1).

61504204132031 is an equidigital number, since it uses as much as digits as its factorization.

61504204132031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17280, while the sum is 32.

Adding to 61504204132031 its reverse (13023140240516), we get a palindrome (74527344372547).

The spelling of 61504204132031 in words is "sixty-one trillion, five hundred four billion, two hundred four million, one hundred thirty-two thousand, thirty-one".