11626781616541 has 16 divisors (see below), whose sum is σ = 14313514695424. Its totient is φ = 9196878495744.

The previous prime is 11626781616517. The next prime is 11626781616557. The reversal of 11626781616541 is 14561618762611.

It is a cyclic number.

It is not a de Polignac number, because 11626781616541 - 2⁷ = 11626781616413 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11626781616041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15842916 + ... + 16560541.

It is an arithmetic number, because the mean of its divisors is an integer number (894594668464).

Almost surely, 2^{11626781616541} is an apocalyptic number.

It is an amenable number.

11626781616541 is a deficient number, since it is larger than the sum of its proper divisors (2686733078883).

11626781616541 is a wasteful number, since it uses less digits than its factorization.

11626781616541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32407420.

The product of its digits is 2903040, while the sum is 55.

The spelling of 11626781616541 in words is "eleven trillion, six hundred twenty-six billion, seven hundred eighty-one million, six hundred sixteen thousand, five hundred forty-one".