20361542564 has 24 divisors (see below), whose sum is σ = 38892643776. Its totient is φ = 9250340000.

The previous prime is 20361542561. The next prime is 20361542581. The reversal of 20361542564 is 46524516302.

It is not an unprimeable number, because it can be changed into a prime (20361542561) 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, 38072 + ... + 205359.

It is an arithmetic number, because the mean of its divisors is an integer number (1620526824).

Almost surely, 2^20361542564 is an apocalyptic number.

It is an amenable number.

20361542564 is a deficient number, since it is larger than the sum of its proper divisors (18531101212).

20361542564 is a wasteful number, since it uses less digits than its factorization.

20361542564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245347 (or 245345 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 38.

The spelling of 20361542564 in words is "twenty billion, three hundred sixty-one million, five hundred forty-two thousand, five hundred sixty-four".