40950820989 has 24 divisors (see below), whose sum is σ = 63828011520. Its totient is φ = 25150368672.

The previous prime is 40950820921. The next prime is 40950821029. The reversal of 40950820989 is 98902805904.

40950820989 is a `hidden beast` number, since 40 + 9 + 508 + 2 + 0 + 98 + 9 = 666.

It is not a de Polignac number, because 40950820989 - 2¹⁶ = 40950755453 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40950820909) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 289069 + ... + 406770.

It is an arithmetic number, because the mean of its divisors is an integer number (2659500480).

Almost surely, 2^40950820989 is an apocalyptic number.

It is an amenable number.

40950820989 is a deficient number, since it is larger than the sum of its proper divisors (22877190531).

40950820989 is a wasteful number, since it uses less digits than its factorization.

40950820989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 696361 (or 696358 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 54.

The spelling of 40950820989 in words is "forty billion, nine hundred fifty million, eight hundred twenty thousand, nine hundred eighty-nine".