2021067010656 has 72 divisors (see below), whose sum is σ = 5960276346024. Its totient is φ = 673689000960.

The previous prime is 2021067010639. The next prime is 2021067010657. The reversal of 2021067010656 is 6560107601202.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 2021067010656.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021067010657) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 129947665 + ... + 129963216.

It is an arithmetic number, because the mean of its divisors is an integer number (82781615917).

Almost surely, 2^{2021067010656} is an apocalyptic number.

It is an amenable number.

2021067010656 is an abundant number, since it is smaller than the sum of its proper divisors (3939209335368).

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

2021067010656 is an equidigital number, since it uses as much as digits as its factorization.

2021067010656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259910906 (or 259910886 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The spelling of 2021067010656 in words is "two trillion, twenty-one billion, sixty-seven million, ten thousand, six hundred fifty-six".