2261566381477 has 8 divisors (see below), whose sum is σ = 2445723544320. Its totient is φ = 2078865006960.

The previous prime is 2261566381457. The next prime is 2261566381499. The reversal of 2261566381477 is 7741836651622.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2261566381477 is a prime.

It is a super-2 number, since 2×2261566381477² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2261566381457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 363943849 + ... + 363950062.

It is an arithmetic number, because the mean of its divisors is an integer number (305715443040).

Almost surely, 2^{2261566381477} is an apocalyptic number.

It is an amenable number.

2261566381477 is a deficient number, since it is larger than the sum of its proper divisors (184157162843).

2261566381477 is a wasteful number, since it uses less digits than its factorization.

2261566381477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 727894163.

The product of its digits is 20321280, while the sum is 58.

The spelling of 2261566381477 in words is "two trillion, two hundred sixty-one billion, five hundred sixty-six million, three hundred eighty-one thousand, four hundred seventy-seven".