1234568136680 has 16 divisors (see below), whose sum is σ = 2777778307620. Its totient is φ = 493827254656.

The previous prime is 1234568136671. The next prime is 1234568136713. The reversal of 1234568136680 is 866318654321.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1150123263844 + 84444872836 = 1072438^2 + 290594^2 .

It is a super-2 number, since 2×1234568136680² (a number of 25 digits) contains 22 as substring.

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, 15432101669 + ... + 15432101748.

Almost surely, 2^{1234568136680} is an apocalyptic number.

1234568136680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1234568136680 is an abundant number, since it is smaller than the sum of its proper divisors (1543210170940).

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

1234568136680 is a wasteful number, since it uses less digits than its factorization.

1234568136680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30864203428 (or 30864203424 counting only the distinct ones).

The product of its (nonzero) digits is 4976640, while the sum is 53.

The spelling of 1234568136680 in words is "one trillion, two hundred thirty-four billion, five hundred sixty-eight million, one hundred thirty-six thousand, six hundred eighty".