659426450091 has 16 divisors (see below), whose sum is σ = 883153724544. Its totient is φ = 437662756224.

The previous prime is 659426450071. The next prime is 659426450113. The reversal of 659426450091 is 190054624956.

It is not a de Polignac number, because 659426450091 - 2⁶ = 659426450027 is a prime.

It is a super-2 number, since 2×659426450091² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (659426450021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63120 + ... + 1150146.

It is an arithmetic number, because the mean of its divisors is an integer number (55197107784).

Almost surely, 2^659426450091 is an apocalyptic number.

659426450091 is a deficient number, since it is larger than the sum of its proper divisors (223727274453).

659426450091 is a wasteful number, since it uses less digits than its factorization.

659426450091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1087930.

The product of its (nonzero) digits is 2332800, while the sum is 51.

The spelling of 659426450091 in words is "six hundred fifty-nine billion, four hundred twenty-six million, four hundred fifty thousand, ninety-one".