291280001272 has 32 divisors (see below), whose sum is σ = 589153506480. Its totient is φ = 134210188800.

The previous prime is 291280001269. The next prime is 291280001323. The reversal of 291280001272 is 272100082192.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 2299854 + ... + 2423197.

Almost surely, 2^291280001272 is an apocalyptic number.

It is an amenable number.

291280001272 is an abundant number, since it is smaller than the sum of its proper divisors (297873505208).

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

291280001272 is a wasteful number, since it uses less digits than its factorization.

291280001272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4723663 (or 4723659 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 34.

The spelling of 291280001272 in words is "two hundred ninety-one billion, two hundred eighty million, one thousand, two hundred seventy-two".