61504204132432 has 20 divisors (see below), whose sum is σ = 121412780329140. Its totient is φ = 30171873724928.

The previous prime is 61504204132373. The next prime is 61504204132457. The reversal of 61504204132432 is 23423140240516.

It can be written as a sum of positive squares in 2 ways, for example, as 32241773537856 + 29262430594576 = 5678184^2 + 5409476^2 .

It is a junction number, because it is equal to n+sod(n) for n = 61504204132391 and 61504204132400.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36264270457 + ... + 36264272152.

It is an arithmetic number, because the mean of its divisors is an integer number (6070639016457).

Almost surely, 2^{61504204132432} is an apocalyptic number.

It is an amenable number.

61504204132432 is a deficient number, since it is larger than the sum of its proper divisors (59908576196708).

61504204132432 is a wasteful number, since it uses less digits than its factorization.

61504204132432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72528542670 (or 72528542664 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 37.

Adding to 61504204132432 its reverse (23423140240516), we get a palindrome (84927344372948).

The spelling of 61504204132432 in words is "sixty-one trillion, five hundred four billion, two hundred four million, one hundred thirty-two thousand, four hundred thirty-two".