1291768030028 has 12 divisors (see below), whose sum is σ = 2583536060112. Its totient is φ = 553614870000.

The previous prime is 1291768030009. The next prime is 1291768030099. The reversal of 1291768030028 is 8200308671921.

It is a happy number.

1291768030028 is an admirable number.

It is a hoax number, since the sum of its digits (47) coincides with the sum of the digits of its distinct prime factors.

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, 23067286223 + ... + 23067286278.

It is an arithmetic number, because the mean of its divisors is an integer number (215294671676).

Almost surely, 2^{1291768030028} is an apocalyptic number.

It is an amenable number.

1291768030028 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1291768030028 is a wasteful number, since it uses less digits than its factorization.

1291768030028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46134572512 (or 46134572510 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 47.

The spelling of 1291768030028 in words is "one trillion, two hundred ninety-one billion, seven hundred sixty-eight million, thirty thousand, twenty-eight".