9951764250989 has 16 divisors (see below), whose sum is σ = 11495210561856. Its totient is φ = 8514786220800.

The previous prime is 9951764250973. The next prime is 9951764251007. The reversal of 9951764250989 is 9890524671599.

It is a cyclic number.

It is not a de Polignac number, because 9951764250989 - 2⁴ = 9951764250973 is a prime.

It is a super-2 number, since 2×9951764250989² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9951764250089) 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, 21336179 + ... + 21797615.

It is an arithmetic number, because the mean of its divisors is an integer number (718450660116).

Almost surely, 2^{9951764250989} is an apocalyptic number.

It is an amenable number.

9951764250989 is a deficient number, since it is larger than the sum of its proper divisors (1543446310867).

9951764250989 is a wasteful number, since it uses less digits than its factorization.

9951764250989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 576796.

The product of its (nonzero) digits is 440899200, while the sum is 74.

The spelling of 9951764250989 in words is "nine trillion, nine hundred fifty-one billion, seven hundred sixty-four million, two hundred fifty thousand, nine hundred eighty-nine".