1268400881530 has 8 divisors (see below), whose sum is σ = 2283121586772. Its totient is φ = 507360352608.

The previous prime is 1268400881491. The next prime is 1268400881551. The reversal of 1268400881530 is 351880048621.

It can be written as a sum of positive squares in 2 ways, for example, as 1227488942241 + 40911939289 = 1107921^2 + 202267^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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, 63420044067 + ... + 63420044086.

Almost surely, 2^{1268400881530} is an apocalyptic number.

1268400881530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1268400881530 is a deficient number, since it is larger than the sum of its proper divisors (1014720705242).

1268400881530 is a wasteful number, since it uses less digits than its factorization.

1268400881530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126840088160.

The product of its (nonzero) digits is 368640, while the sum is 46.

The spelling of 1268400881530 in words is "one trillion, two hundred sixty-eight billion, four hundred million, eight hundred eighty-one thousand, five hundred thirty".