2051624321220 has 48 divisors (see below), whose sum is σ = 5841913331520. Its totient is φ = 537826939776.

The previous prime is 2051624321207. The next prime is 2051624321237. The reversal of 2051624321220 is 221234261502.

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

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 289773907 + ... + 289780986.

It is an arithmetic number, because the mean of its divisors is an integer number (121706527740).

Almost surely, 2^{2051624321220} is an apocalyptic number.

2051624321220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2051624321220 is an abundant number, since it is smaller than the sum of its proper divisors (3790289010300).

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

2051624321220 is a wasteful number, since it uses less digits than its factorization.

2051624321220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 579554964 (or 579554962 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 30.

Adding to 2051624321220 its reverse (221234261502), we get a palindrome (2272858582722).

The spelling of 2051624321220 in words is "two trillion, fifty-one billion, six hundred twenty-four million, three hundred twenty-one thousand, two hundred twenty".