11505530152 has 8 divisors (see below), whose sum is σ = 21572869050. Its totient is φ = 5752765072.

The previous prime is 11505530131. The next prime is 11505530173. The reversal of 11505530152 is 25103550511.

It is an interprime number because it is at equal distance from previous prime (11505530131) and next prime (11505530173).

It can be written as a sum of positive squares in only one way, i.e., 6523146756 + 4982383396 = 80766^2 + 70586^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×11505530152² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11505530152.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 719095627 + ... + 719095642.

Almost surely, 2^11505530152 is an apocalyptic number.

It is an amenable number.

11505530152 is a deficient number, since it is larger than the sum of its proper divisors (10067338898).

11505530152 is a wasteful number, since it uses less digits than its factorization.

11505530152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1438191275 (or 1438191271 counting only the distinct ones).

The product of its (nonzero) digits is 3750, while the sum is 28.

The spelling of 11505530152 in words is "eleven billion, five hundred five million, five hundred thirty thousand, one hundred fifty-two".