12402237065761 has 9 divisors (see below), whose sum is σ = 12517450357881. Its totient is φ = 12288074732784.

The previous prime is 12402237065749. The next prime is 12402237065851. The reversal of 12402237065761 is 16756073220421.

The square root of 12402237065761 is 3521681.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 5254955632161 + 7147281433600 = 2292369^2 + 2673440^2 .

It is not a de Polignac number, because 12402237065761 - 2¹³ = 12402237057569 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12402237095761) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 383847075 + ... + 383879383.

Almost surely, 2^{12402237065761} is an apocalyptic number.

12402237065761 is the 3521681-st square number.

12402237065761 is the 1760841-st centered octagonal number.

It is an amenable number.

12402237065761 is a deficient number, since it is larger than the sum of its proper divisors (115213292120).

12402237065761 is an frugal number, since it uses more digits than its factorization.

12402237065761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64836 (or 32418 counting only the distinct ones).

The product of its (nonzero) digits is 846720, while the sum is 46.

The spelling of 12402237065761 in words is "twelve trillion, four hundred two billion, two hundred thirty-seven million, sixty-five thousand, seven hundred sixty-one".