20210551244 has 24 divisors (see below), whose sum is σ = 38734699920. Its totient is φ = 9169844544.

The previous prime is 20210551223. The next prime is 20210551247. The reversal of 20210551244 is 44215501202.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is not an unprimeable number, because it can be changed into a prime (20210551247) 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, 3290699 + ... + 3296834.

It is an arithmetic number, because the mean of its divisors is an integer number (1613945830).

Almost surely, 2^20210551244 is an apocalyptic number.

It is an amenable number.

20210551244 is a deficient number, since it is larger than the sum of its proper divisors (18524148676).

20210551244 is a wasteful number, since it uses less digits than its factorization.

20210551244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6587609 (or 6587607 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 26.

The spelling of 20210551244 in words is "twenty billion, two hundred ten million, five hundred fifty-one thousand, two hundred forty-four".