1591164642006 has 192 divisors, whose sum is σ = 4002244646400. Its totient is φ = 470840034816.

The previous prime is 1591164641959. The next prime is 1591164642029. The reversal of 1591164642006 is 6002464611951.

1591164642006 is a `hidden beast` number, since 1 + 59 + 116 + 464 + 20 + 0 + 6 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 35925831 + ... + 35970093.

It is an arithmetic number, because the mean of its divisors is an integer number (20845024200).

Almost surely, 2^{1591164642006} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1591164642006, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2001122323200).

1591164642006 is an abundant number, since it is smaller than the sum of its proper divisors (2411080004394).

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

1591164642006 is a wasteful number, since it uses less digits than its factorization.

1591164642006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44545 (or 44533 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 45.

The spelling of 1591164642006 in words is "one trillion, five hundred ninety-one billion, one hundred sixty-four million, six hundred forty-two thousand, six".