20953598387 has 8 divisors (see below), whose sum is σ = 22203007200. Its totient is φ = 19706061184.

The previous prime is 20953598377. The next prime is 20953598401. The reversal of 20953598387 is 78389535902.

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 20953598387 - 2¹⁴ = 20953582003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20953598357) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 444812 + ... + 489657.

It is an arithmetic number, because the mean of its divisors is an integer number (2775375900).

Almost surely, 2^20953598387 is an apocalyptic number.

20953598387 is a deficient number, since it is larger than the sum of its proper divisors (1249408813).

20953598387 is a wasteful number, since it uses less digits than its factorization.

20953598387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 935805.

The product of its (nonzero) digits is 16329600, while the sum is 59.

The spelling of 20953598387 in words is "twenty billion, nine hundred fifty-three million, five hundred ninety-eight thousand, three hundred eighty-seven".