11006642155 has 16 divisors (see below), whose sum is σ = 13699272384. Its totient is φ = 8482492800.

The previous prime is 11006642137. The next prime is 11006642173. The reversal of 11006642155 is 55124660011.

It is an interprime number because it is at equal distance from previous prime (11006642137) and next prime (11006642173).

It is not a de Polignac number, because 11006642155 - 2⁵ = 11006642123 is a prime.

It is a super-2 number, since 2×11006642155² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

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, 275847 + ... + 313216.

It is an arithmetic number, because the mean of its divisors is an integer number (856204524).

Almost surely, 2^11006642155 is an apocalyptic number.

11006642155 is a deficient number, since it is larger than the sum of its proper divisors (2692630229).

11006642155 is a wasteful number, since it uses less digits than its factorization.

11006642155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 589206.

The product of its (nonzero) digits is 7200, while the sum is 31.

The spelling of 11006642155 in words is "eleven billion, six million, six hundred forty-two thousand, one hundred fifty-five".