2021520625950 has 48 divisors (see below), whose sum is σ = 5729567034240. Its totient is φ = 462061857120.

The previous prime is 2021520625931. The next prime is 2021520625951. The reversal of 2021520625950 is 595260251202.

It is a super-2 number, since 2×2021520625950² (a number of 25 digits) contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2021520625899 and 2021520625908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021520625951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 962627820 + ... + 962629919.

It is an arithmetic number, because the mean of its divisors is an integer number (119365979880).

Almost surely, 2^{2021520625950} is an apocalyptic number.

2021520625950 is an abundant number, since it is smaller than the sum of its proper divisors (3708046408290).

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

2021520625950 is a wasteful number, since it uses less digits than its factorization.

2021520625950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1925257761 (or 1925257756 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 39.

The spelling of 2021520625950 in words is "two trillion, twenty-one billion, five hundred twenty million, six hundred twenty-five thousand, nine hundred fifty".