2010721720545 has 80 divisors (see below), whose sum is σ = 3711599031360. Its totient is φ = 1040645563776.

The previous prime is 2010721720529. The next prime is 2010721720603. The reversal of 2010721720545 is 5450271270102.

2010721720545 is a `hidden beast` number, since 2 + 0 + 10 + 72 + 17 + 20 + 545 = 666.

It is not a de Polignac number, because 2010721720545 - 2⁴ = 2010721720529 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 5502294 + ... + 5856336.

It is an arithmetic number, because the mean of its divisors is an integer number (46394987892).

Almost surely, 2^{2010721720545} is an apocalyptic number.

It is an amenable number.

2010721720545 is a deficient number, since it is larger than the sum of its proper divisors (1700877310815).

2010721720545 is a wasteful number, since it uses less digits than its factorization.

2010721720545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 354476 (or 354467 counting only the distinct ones).

The product of its (nonzero) digits is 39200, while the sum is 36.

Adding to 2010721720545 its reverse (5450271270102), we get a palindrome (7460992990647).

The spelling of 2010721720545 in words is "two trillion, ten billion, seven hundred twenty-one million, seven hundred twenty thousand, five hundred forty-five".