2061554070365 has 4 divisors (see below), whose sum is σ = 2473864884444. Its totient is φ = 1649243256288.

The previous prime is 2061554070361. The next prime is 2061554070427. The reversal of 2061554070365 is 5630704551602.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1567196023129 + 494358047236 = 1251877^2 + 703106^2 .

It is a cyclic number.

It is not a de Polignac number, because 2061554070365 - 2² = 2061554070361 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2061554070361) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 206155407032 + ... + 206155407041.

It is an arithmetic number, because the mean of its divisors is an integer number (618466221111).

Almost surely, 2^{2061554070365} is an apocalyptic number.

It is an amenable number.

2061554070365 is a deficient number, since it is larger than the sum of its proper divisors (412310814079).

2061554070365 is an equidigital number, since it uses as much as digits as its factorization.

2061554070365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 412310814078.

The product of its (nonzero) digits is 756000, while the sum is 44.

The spelling of 2061554070365 in words is "two trillion, sixty-one billion, five hundred fifty-four million, seventy thousand, three hundred sixty-five".