3111345151556 has 6 divisors (see below), whose sum is σ = 5444854015230. Its totient is φ = 1555672575776.

The previous prime is 3111345151547. The next prime is 3111345151559. The reversal of 3111345151556 is 6551515431113.

It can be written as a sum of positive squares in only one way, i.e., 3033066064900 + 78279086656 = 1741570^2 + 279784^2 .

It is a super-2 number, since 2×3111345151556² (a number of 26 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3111345151559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 388918143941 + ... + 388918143948.

It is an arithmetic number, because the mean of its divisors is an integer number (907475669205).

Almost surely, 2^{3111345151556} is an apocalyptic number.

It is an amenable number.

3111345151556 is a deficient number, since it is larger than the sum of its proper divisors (2333508863674).

3111345151556 is a wasteful number, since it uses less digits than its factorization.

3111345151556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 777836287893 (or 777836287891 counting only the distinct ones).

The product of its digits is 135000, while the sum is 41.

The spelling of 3111345151556 in words is "three trillion, one hundred eleven billion, three hundred forty-five million, one hundred fifty-one thousand, five hundred fifty-six".