2187490200804 has 18 divisors (see below), whose sum is σ = 5529489118790. Its totient is φ = 729163400256.

The previous prime is 2187490200799. The next prime is 2187490200821. The reversal of 2187490200804 is 4080020947812.

2187490200804 is a `hidden beast` number, since 2 + 1 + 87 + 490 + 2 + 0 + 0 + 80 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1927787848704 + 259702352100 = 1388448^2 + 509610^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×2187490200804² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2187490200804.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 30381808309 + ... + 30381808380.

Almost surely, 2^{2187490200804} is an apocalyptic number.

It is an amenable number.

2187490200804 is an abundant number, since it is smaller than the sum of its proper divisors (3341998917986).

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

2187490200804 is a wasteful number, since it uses less digits than its factorization.

2187490200804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60763616699 (or 60763616694 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 45.

The spelling of 2187490200804 in words is "two trillion, one hundred eighty-seven billion, four hundred ninety million, two hundred thousand, eight hundred four".