2291501213856 has 48 divisors (see below), whose sum is σ = 6683545209600. Its totient is φ = 763833737664.

The previous prime is 2291501213839. The next prime is 2291501213887. The reversal of 2291501213856 is 6583121051922.

2291501213856 is a `hidden beast` number, since 2 + 2 + 9 + 1 + 501 + 2 + 138 + 5 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (48).

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, 1326099376 + ... + 1326101103.

It is an arithmetic number, because the mean of its divisors is an integer number (139240525200).

Almost surely, 2^{2291501213856} is an apocalyptic number.

It is an amenable number.

2291501213856 is an abundant number, since it is smaller than the sum of its proper divisors (4392043995744).

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

2291501213856 is a wasteful number, since it uses less digits than its factorization.

2291501213856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2652200498 (or 2652200484 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 45.

The spelling of 2291501213856 in words is "two trillion, two hundred ninety-one billion, five hundred one million, two hundred thirteen thousand, eight hundred fifty-six".