621112115050 has 72 divisors (see below), whose sum is σ = 1344188543436. Its totient is φ = 212904437760.

The previous prime is 621112115033. The next prime is 621112115053. The reversal of 621112115050 is 50511211126.

It can be written as a sum of positive squares in 6 ways, for example, as 276264820881 + 344847294169 = 525609^2 + 587237^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (621112115053) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 11765514 + ... + 11818186.

Almost surely, 2^621112115050 is an apocalyptic number.

621112115050 is an abundant number, since it is smaller than the sum of its proper divisors (723076428386).

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

621112115050 is a wasteful number, since it uses less digits than its factorization.

621112115050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57512 (or 57500 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 25.

Adding to 621112115050 its reverse (50511211126), we get a palindrome (671623326176).

The spelling of 621112115050 in words is "six hundred twenty-one billion, one hundred twelve million, one hundred fifteen thousand, fifty".