921090052107 has 24 divisors (see below), whose sum is σ = 1443085141680. Its totient is φ = 563842782720.

The previous prime is 921090052093. The next prime is 921090052109. The reversal of 921090052107 is 701250090129.

It is not a de Polignac number, because 921090052107 - 2⁷ = 921090051979 is a prime.

It is not an unprimeable number, because it can be changed into a prime (921090052109) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 73410757 + ... + 73423302.

It is an arithmetic number, because the mean of its divisors is an integer number (60128547570).

Almost surely, 2^921090052107 is an apocalyptic number.

921090052107 is a deficient number, since it is larger than the sum of its proper divisors (521995089573).

921090052107 is a wasteful number, since it uses less digits than its factorization.

921090052107 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146834123 (or 146834120 counting only the distinct ones).

The product of its (nonzero) digits is 11340, while the sum is 36.

The spelling of 921090052107 in words is "nine hundred twenty-one billion, ninety million, fifty-two thousand, one hundred seven".