291042064480 has 48 divisors (see below), whose sum is σ = 728033171040. Its totient is φ = 109568776192.

The previous prime is 291042064441. The next prime is 291042064493. The reversal of 291042064480 is 84460240192.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53497660 + ... + 53503099.

It is an arithmetic number, because the mean of its divisors is an integer number (15167357730).

Almost surely, 2^291042064480 is an apocalyptic number.

291042064480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

291042064480 is an abundant number, since it is smaller than the sum of its proper divisors (436991106560).

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

291042064480 is a wasteful number, since it uses less digits than its factorization.

291042064480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107000791 (or 107000783 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 40.

The spelling of 291042064480 in words is "two hundred ninety-one billion, forty-two million, sixty-four thousand, four hundred eighty".