11354639506 has 32 divisors (see below), whose sum is σ = 19853568000. Its totient is φ = 4770045072.

The previous prime is 11354639501. The next prime is 11354639519. The reversal of 11354639506 is 60593645311.

It is a happy number.

It is a super-2 number, since 2×11354639506² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11354639501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 116805 + ... + 190663.

It is an arithmetic number, because the mean of its divisors is an integer number (620424000).

Almost surely, 2^11354639506 is an apocalyptic number.

11354639506 is a deficient number, since it is larger than the sum of its proper divisors (8498928494).

11354639506 is a wasteful number, since it uses less digits than its factorization.

11354639506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74086.

The product of its (nonzero) digits is 291600, while the sum is 43.

The spelling of 11354639506 in words is "eleven billion, three hundred fifty-four million, six hundred thirty-nine thousand, five hundred six".