1291495054080 has 432 divisors, whose sum is σ = 5234337206784. Its totient is φ = 268362178560.

The previous prime is 1291495054051. The next prime is 1291495054093. The reversal of 1291495054080 is 804505941921.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1757769 + ... + 2381751.

It is an arithmetic number, because the mean of its divisors is an integer number (12116521312).

Almost surely, 2^{1291495054080} is an apocalyptic number.

1291495054080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1291495054080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2617168603392).

1291495054080 is an abundant number, since it is smaller than the sum of its proper divisors (3942842152704).

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

1291495054080 is a wasteful number, since it uses less digits than its factorization.

1291495054080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 624032 (or 624011 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 48.

The spelling of 1291495054080 in words is "one trillion, two hundred ninety-one billion, four hundred ninety-five million, fifty-four thousand, eighty".