1009397802291 has 4 divisors (see below), whose sum is σ = 1345863736392. Its totient is φ = 672931868192.

The previous prime is 1009397802269. The next prime is 1009397802319. The reversal of 1009397802291 is 1922087939001.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1009397802291 - 2²¹ = 1009395705139 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1009397802211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 168232967046 + ... + 168232967051.

It is an arithmetic number, because the mean of its divisors is an integer number (336465934098).

Almost surely, 2^{1009397802291} is an apocalyptic number.

1009397802291 is a deficient number, since it is larger than the sum of its proper divisors (336465934101).

1009397802291 is an equidigital number, since it uses as much as digits as its factorization.

1009397802291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336465934100.

The product of its (nonzero) digits is 489888, while the sum is 51.

The spelling of 1009397802291 in words is "one trillion, nine billion, three hundred ninety-seven million, eight hundred two thousand, two hundred ninety-one".