1243914658660 has 12 divisors (see below), whose sum is σ = 2612220783228. Its totient is φ = 497565863456.

The previous prime is 1243914658643. The next prime is 1243914658691. The reversal of 1243914658660 is 668564193421.

It can be written as a sum of positive squares in 2 ways, for example, as 369985093696 + 873929564964 = 608264^2 + 934842^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31097866447 + ... + 31097866486.

It is an arithmetic number, because the mean of its divisors is an integer number (217685065269).

Almost surely, 2^{1243914658660} is an apocalyptic number.

1243914658660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1243914658660 is an abundant number, since it is smaller than the sum of its proper divisors (1368306124568).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1243914658660 is a wasteful number, since it uses less digits than its factorization.

1243914658660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62195732942 (or 62195732940 counting only the distinct ones).

The product of its (nonzero) digits is 7464960, while the sum is 55.

The spelling of 1243914658660 in words is "one trillion, two hundred forty-three billion, nine hundred fourteen million, six hundred fifty-eight thousand, six hundred sixty".