11605621450 has 12 divisors (see below), whose sum is σ = 21586455990. Its totient is φ = 4642248560.

The previous prime is 11605621409. The next prime is 11605621453. The reversal of 11605621450 is 5412650611.

11605621450 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 5291253081 + 6314368369 = 72741^2 + 79463^2 .

It is not an unprimeable number, because it can be changed into a prime (11605621453) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 116056165 + ... + 116056264.

Almost surely, 2^11605621450 is an apocalyptic number.

11605621450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11605621450 is a deficient number, since it is larger than the sum of its proper divisors (9980834540).

11605621450 is a wasteful number, since it uses less digits than its factorization.

11605621450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232112441 (or 232112436 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 31.

The spelling of 11605621450 in words is "eleven billion, six hundred five million, six hundred twenty-one thousand, four hundred fifty".