1630661511204 has 36 divisors (see below), whose sum is σ = 4496672653200. Its totient is φ = 494139851760.

The previous prime is 1630661511191. The next prime is 1630661511263. The reversal of 1630661511204 is 4021151660361.

1630661511204 is a `hidden beast` number, since 1 + 6 + 3 + 0 + 6 + 615 + 11 + 20 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×1630661511204² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2058915654 + ... + 2058916445.

It is an arithmetic number, because the mean of its divisors is an integer number (124907573700).

Almost surely, 2^{1630661511204} is an apocalyptic number.

It is an amenable number.

1630661511204 is an abundant number, since it is smaller than the sum of its proper divisors (2866011141996).

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

1630661511204 is a wasteful number, since it uses less digits than its factorization.

1630661511204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4117832120 (or 4117832115 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The spelling of 1630661511204 in words is "one trillion, six hundred thirty billion, six hundred sixty-one million, five hundred eleven thousand, two hundred four".