11628557541 has 6 divisors (see below), whose sum is σ = 16796805350. Its totient is φ = 7752371688.

The previous prime is 11628557537. The next prime is 11628557597. The reversal of 11628557541 is 14575582611.

11628557541 is a `hidden beast` number, since 1 + 16 + 28 + 5 + 575 + 41 = 666.

It can be written as a sum of positive squares in only one way, i.e., 6221896641 + 5406660900 = 78879^2 + 73530^2 .

It is not a de Polignac number, because 11628557541 - 2² = 11628557537 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11628552541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 646030966 + ... + 646030983.

Almost surely, 2^11628557541 is an apocalyptic number.

It is an amenable number.

11628557541 is a deficient number, since it is larger than the sum of its proper divisors (5168247809).

11628557541 is a wasteful number, since it uses less digits than its factorization.

11628557541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1292061955 (or 1292061952 counting only the distinct ones).

The product of its digits is 336000, while the sum is 45.

The spelling of 11628557541 in words is "eleven billion, six hundred twenty-eight million, five hundred fifty-seven thousand, five hundred forty-one".