2921147792109 has 20 divisors (see below), whose sum is σ = 4504454106240. Its totient is φ = 1884611477160.

The previous prime is 2921147792107. The next prime is 2921147792159. The reversal of 2921147792109 is 9012977411292.

It is not a de Polignac number, because 2921147792109 - 2¹ = 2921147792107 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2921147792107) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 581667699 + ... + 581672720.

It is an arithmetic number, because the mean of its divisors is an integer number (225222705312).

Almost surely, 2^{2921147792109} is an apocalyptic number.

It is an amenable number.

2921147792109 is a deficient number, since it is larger than the sum of its proper divisors (1583306314131).

2921147792109 is a wasteful number, since it uses less digits than its factorization.

2921147792109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1163340462 (or 1163340453 counting only the distinct ones).

The product of its (nonzero) digits is 1143072, while the sum is 54.

The spelling of 2921147792109 in words is "two trillion, nine hundred twenty-one billion, one hundred forty-seven million, seven hundred ninety-two thousand, one hundred nine".