2011550156516 has 6 divisors (see below), whose sum is σ = 3520212773910. Its totient is φ = 1005775078256.

The previous prime is 2011550156513. The next prime is 2011550156519. The reversal of 2011550156516 is 6156510551102.

It is an interprime number because it is at equal distance from previous prime (2011550156513) and next prime (2011550156519).

It can be written as a sum of positive squares in only one way, i.e., 1280867116516 + 730683040000 = 1131754^2 + 854800^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2011550156516.

It is not an unprimeable number, because it can be changed into a prime (2011550156513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 251443769561 + ... + 251443769568.

It is an arithmetic number, because the mean of its divisors is an integer number (586702128985).

Almost surely, 2^{2011550156516} is an apocalyptic number.

It is an amenable number.

2011550156516 is a deficient number, since it is larger than the sum of its proper divisors (1508662617394).

2011550156516 is a wasteful number, since it uses less digits than its factorization.

2011550156516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 502887539133 (or 502887539131 counting only the distinct ones).

The product of its (nonzero) digits is 45000, while the sum is 38.

The spelling of 2011550156516 in words is "two trillion, eleven billion, five hundred fifty million, one hundred fifty-six thousand, five hundred sixteen".