11551530320131 has 4 divisors (see below), whose sum is σ = 11635848059832. Its totient is φ = 11467212580432.

The previous prime is 11551530320117. The next prime is 11551530320147. The reversal of 11551530320131 is 13102303515511.

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

It is a cyclic number.

It is not a de Polignac number, because 11551530320131 - 2⁷ = 11551530320003 is a prime.

It is a super-2 number, since 2×11551530320131² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11551530320093 and 11551530320102.

It is not an unprimeable number, because it can be changed into a prime (11551530320101) 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, 42158869645 + ... + 42158869918.

It is an arithmetic number, because the mean of its divisors is an integer number (2908962014958).

Almost surely, 2^{11551530320131} is an apocalyptic number.

11551530320131 is a deficient number, since it is larger than the sum of its proper divisors (84317739701).

11551530320131 is an equidigital number, since it uses as much as digits as its factorization.

11551530320131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84317739700.

The product of its (nonzero) digits is 6750, while the sum is 31.

Adding to 11551530320131 its reverse (13102303515511), we get a palindrome (24653833835642).

The spelling of 11551530320131 in words is "eleven trillion, five hundred fifty-one billion, five hundred thirty million, three hundred twenty thousand, one hundred thirty-one".