2251206111630 has 48 divisors (see below), whose sum is σ = 6284999923920. Its totient is φ = 514561396608.

The previous prime is 2251206111607. The next prime is 2251206111641. The reversal of 2251206111630 is 361116021522.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 765714895 + ... + 765717834.

It is an arithmetic number, because the mean of its divisors is an integer number (130937498415).

Almost surely, 2^{2251206111630} is an apocalyptic number.

2251206111630 is an abundant number, since it is smaller than the sum of its proper divisors (4033793812290).

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

2251206111630 is a wasteful number, since it uses less digits than its factorization.

2251206111630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1531432753 (or 1531432746 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 30.

The spelling of 2251206111630 in words is "two trillion, two hundred fifty-one billion, two hundred six million, one hundred eleven thousand, six hundred thirty".