11621361505145 has 16 divisors (see below), whose sum is σ = 15938148881280. Its totient is φ = 7968792766464.

The previous prime is 11621361505139. The next prime is 11621361505199. The reversal of 11621361505145 is 54150516312611.

It is a cyclic number.

It is not a de Polignac number, because 11621361505145 - 2²² = 11621357310841 is a prime.

It is a super-2 number, since 2×11621361505145² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 905672 + ... + 4905401.

It is an arithmetic number, because the mean of its divisors is an integer number (996134305080).

Almost surely, 2^{11621361505145} is an apocalyptic number.

It is an amenable number.

11621361505145 is a deficient number, since it is larger than the sum of its proper divisors (4316787376135).

11621361505145 is an equidigital number, since it uses as much as digits as its factorization.

11621361505145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5868224.

The product of its (nonzero) digits is 108000, while the sum is 41.

Adding to 11621361505145 its reverse (54150516312611), we get a palindrome (65771877817756).

The spelling of 11621361505145 in words is "eleven trillion, six hundred twenty-one billion, three hundred sixty-one million, five hundred five thousand, one hundred forty-five".