11061431372555 has 16 divisors (see below), whose sum is σ = 13283666729280. Its totient is φ = 8842513026048.

The previous prime is 11061431372359. The next prime is 11061431372657. The reversal of 11061431372555 is 55527313416011.

It is a cyclic number.

It is not a de Polignac number, because 11061431372555 - 2³⁴ = 11044251503371 is a prime.

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, 236944706 + ... + 236991384.

It is an arithmetic number, because the mean of its divisors is an integer number (830229170580).

Almost surely, 2^{11061431372555} is an apocalyptic number.

11061431372555 is a deficient number, since it is larger than the sum of its proper divisors (2222235356725).

11061431372555 is a wasteful number, since it uses less digits than its factorization.

11061431372555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81190.

The product of its (nonzero) digits is 378000, while the sum is 44.

Adding to 11061431372555 its reverse (55527313416011), we get a palindrome (66588744788566).

The spelling of 11061431372555 in words is "eleven trillion, sixty-one billion, four hundred thirty-one million, three hundred seventy-two thousand, five hundred fifty-five".