1237261481568 has 144 divisors (see below), whose sum is σ = 4096969976736. Its totient is φ = 346833377280.

The previous prime is 1237261481549. The next prime is 1237261481581. The reversal of 1237261481568 is 8651841627321.

It is a happy number.

1237261481568 is a `hidden beast` number, since 1 + 2 + 3 + 7 + 2 + 614 + 8 + 15 + 6 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5682973 + ... + 5896668.

It is an arithmetic number, because the mean of its divisors is an integer number (28451180394).

Almost surely, 2^{1237261481568} is an apocalyptic number.

1237261481568 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1237261481568 is an abundant number, since it is smaller than the sum of its proper divisors (2859708495168).

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

1237261481568 is a wasteful number, since it uses less digits than its factorization.

1237261481568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11579717 (or 11579706 counting only the distinct ones).

The product of its digits is 3870720, while the sum is 54.

The spelling of 1237261481568 in words is "one trillion, two hundred thirty-seven billion, two hundred sixty-one million, four hundred eighty-one thousand, five hundred sixty-eight".