20953394207 has 8 divisors (see below), whose sum is σ = 21063584640. Its totient is φ = 20843349120.

The previous prime is 20953394173. The next prime is 20953394219. The reversal of 20953394207 is 70249335902.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20953394207 - 2¹² = 20953390111 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20953394227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 259019 + ... + 330147.

It is an arithmetic number, because the mean of its divisors is an integer number (2632948080).

Almost surely, 2^20953394207 is an apocalyptic number.

20953394207 is a deficient number, since it is larger than the sum of its proper divisors (110190433).

20953394207 is a wasteful number, since it uses less digits than its factorization.

20953394207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72673.

The product of its (nonzero) digits is 408240, while the sum is 44.

The spelling of 20953394207 in words is "twenty billion, nine hundred fifty-three million, three hundred ninety-four thousand, two hundred seven".