11542638450 has 72 divisors (see below), whose sum is σ = 33299355312. Its totient is φ = 2638315680.

The previous prime is 11542638433. The next prime is 11542638451. The reversal of 11542638450 is 5483624511.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 11542638399 and 11542638408.

It is not an unprimeable number, because it can be changed into a prime (11542638451) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 777864 + ... + 792563.

It is an arithmetic number, because the mean of its divisors is an integer number (462491046).

Almost surely, 2^11542638450 is an apocalyptic number.

11542638450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11542638450 is an abundant number, since it is smaller than the sum of its proper divisors (21756716862).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11542638450 is a wasteful number, since it uses less digits than its factorization.

11542638450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1570456 (or 1570444 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 39.

The spelling of 11542638450 in words is "eleven billion, five hundred forty-two million, six hundred thirty-eight thousand, four hundred fifty".