11503135642 has 8 divisors (see below), whose sum is σ = 17255650356. Its totient is φ = 5751252192.

The previous prime is 11503135639. The next prime is 11503135661. The reversal of 11503135642 is 24653130511.

It can be written as a sum of positive squares in 2 ways, for example, as 10584500161 + 918635481 = 102881^2 + 30309^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 109273 + ... + 186940.

Almost surely, 2^11503135642 is an apocalyptic number.

11503135642 is a deficient number, since it is larger than the sum of its proper divisors (5752514714).

11503135642 is a wasteful number, since it uses less digits than its factorization.

11503135642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315632.

The product of its (nonzero) digits is 10800, while the sum is 31.

The spelling of 11503135642 in words is "eleven billion, five hundred three million, one hundred thirty-five thousand, six hundred forty-two".