1115556151061 has 4 divisors (see below), whose sum is σ = 1216970346624. Its totient is φ = 1014141955500.

The previous prime is 1115556151049. The next prime is 1115556151081. The reversal of 1115556151061 is 1601516555111.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1115556151061 - 2¹⁴ = 1115556134677 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1115556151001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50707097765 + ... + 50707097786.

It is an arithmetic number, because the mean of its divisors is an integer number (304242586656).

Almost surely, 2^{1115556151061} is an apocalyptic number.

1115556151061 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1115556151061 is a deficient number, since it is larger than the sum of its proper divisors (101414195563).

1115556151061 is a wasteful number, since it uses less digits than its factorization.

1115556151061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101414195562.

The product of its (nonzero) digits is 22500, while the sum is 38.

The spelling of 1115556151061 in words is "one trillion, one hundred fifteen billion, five hundred fifty-six million, one hundred fifty-one thousand, sixty-one".