20210551392 has 24 divisors (see below), whose sum is σ = 53052697656. Its totient is φ = 6736850432.

The previous prime is 20210551391. The next prime is 20210551397. The reversal of 20210551392 is 29315501202.

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20210551391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 105263193 + ... + 105263384.

It is an arithmetic number, because the mean of its divisors is an integer number (2210529069).

Almost surely, 2^20210551392 is an apocalyptic number.

It is an amenable number.

20210551392 is an abundant number, since it is smaller than the sum of its proper divisors (32842146264).

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

20210551392 is a wasteful number, since it uses less digits than its factorization.

20210551392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210526590 (or 210526582 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 30.

The spelling of 20210551392 in words is "twenty billion, two hundred ten million, five hundred fifty-one thousand, three hundred ninety-two".