20213745530 has 32 divisors (see below), whose sum is σ = 39698797248. Its totient is φ = 7349276800.

The previous prime is 20213745527. The next prime is 20213745547. The reversal of 20213745530 is 3554731202.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 981014 + ... + 1001406.

It is an arithmetic number, because the mean of its divisors is an integer number (1240587414).

Almost surely, 2^20213745530 is an apocalyptic number.

20213745530 is a deficient number, since it is larger than the sum of its proper divisors (19485051718).

20213745530 is a wasteful number, since it uses less digits than its factorization.

20213745530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29422.

The product of its (nonzero) digits is 25200, while the sum is 32.

The spelling of 20213745530 in words is "twenty billion, two hundred thirteen million, seven hundred forty-five thousand, five hundred thirty".