35564601820 has 96 divisors (see below), whose sum is σ = 87004108800. Its totient is φ = 12083769600.

The previous prime is 35564601797. The next prime is 35564601827. The reversal of 35564601820 is 2810646553.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (35564601827) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 107871 + ... + 287689.

It is an arithmetic number, because the mean of its divisors is an integer number (906292800).

Almost surely, 2^35564601820 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 35564601820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43502054400).

35564601820 is an abundant number, since it is smaller than the sum of its proper divisors (51439506980).

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

35564601820 is a wasteful number, since it uses less digits than its factorization.

35564601820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179899 (or 179897 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 40.

The spelling of 35564601820 in words is "thirty-five billion, five hundred sixty-four million, six hundred one thousand, eight hundred twenty".