2801011021541 has 2 divisors, whose sum is σ = 2801011021542. Its totient is φ = 2801011021540.

The previous prime is 2801011021537. The next prime is 2801011021573. The reversal of 2801011021541 is 1451201101082.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2457463816900 + 343547204641 = 1567630^2 + 586129^2 .

It is a cyclic number.

It is not a de Polignac number, because 2801011021541 - 2² = 2801011021537 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2801011021541.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2801011321541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1400505510770 + 1400505510771.

It is an arithmetic number, because the mean of its divisors is an integer number (1400505510771).

Almost surely, 2^{2801011021541} is an apocalyptic number.

It is an amenable number.

2801011021541 is a deficient number, since it is larger than the sum of its proper divisors (1).

2801011021541 is an equidigital number, since it uses as much as digits as its factorization.

2801011021541 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 640, while the sum is 26.

The spelling of 2801011021541 in words is "two trillion, eight hundred one billion, eleven million, twenty-one thousand, five hundred forty-one".