1009949261636 has 24 divisors (see below), whose sum is σ = 2033454897600. Its totient is φ = 429930460512.

The previous prime is 1009949261627. The next prime is 1009949261647. The reversal of 1009949261636 is 6361629499001.

It is a super-2 number, since 2×1009949261636² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 121034810 + ... + 121043153.

It is an arithmetic number, because the mean of its divisors is an integer number (84727287400).

Almost surely, 2^{1009949261636} is an apocalyptic number.

It is an amenable number.

1009949261636 is an abundant number, since it is smaller than the sum of its proper divisors (1023505635964).

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

1009949261636 is a wasteful number, since it uses less digits than its factorization.

1009949261636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242078123 (or 242078121 counting only the distinct ones).

The product of its (nonzero) digits is 3779136, while the sum is 56.

The spelling of 1009949261636 in words is "one trillion, nine billion, nine hundred forty-nine million, two hundred sixty-one thousand, six hundred thirty-six".