2061971151820 has 24 divisors (see below), whose sum is σ = 4332232371600. Its totient is φ = 824389803072.

The previous prime is 2061971151817. The next prime is 2061971151847. The reversal of 2061971151820 is 281511791602.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24873690 + ... + 24956449.

It is an arithmetic number, because the mean of its divisors is an integer number (180509682150).

Almost surely, 2^{2061971151820} is an apocalyptic number.

2061971151820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2061971151820 is an abundant number, since it is smaller than the sum of its proper divisors (2270261219780).

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

2061971151820 is a wasteful number, since it uses less digits than its factorization.

2061971151820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49832217 (or 49832215 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 43.

The spelling of 2061971151820 in words is "two trillion, sixty-one billion, nine hundred seventy-one million, one hundred fifty-one thousand, eight hundred twenty".