3261630555493 has 2 divisors, whose sum is σ = 3261630555494. Its totient is φ = 3261630555492.

The previous prime is 3261630555467. The next prime is 3261630555551. The reversal of 3261630555493 is 3945550361623.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2965414873444 + 296215682049 = 1722038^2 + 544257^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3261630555493 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3261630555493.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3261630552493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1630815277746 + 1630815277747.

It is an arithmetic number, because the mean of its divisors is an integer number (1630815277747).

Almost surely, 2^{3261630555493} is an apocalyptic number.

It is an amenable number.

3261630555493 is a deficient number, since it is larger than the sum of its proper divisors (1).

3261630555493 is an equidigital number, since it uses as much as digits as its factorization.

3261630555493 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8748000, while the sum is 52.

The spelling of 3261630555493 in words is "three trillion, two hundred sixty-one billion, six hundred thirty million, five hundred fifty-five thousand, four hundred ninety-three".