11908621290 has 32 divisors (see below), whose sum is σ = 28610750016. Its totient is φ = 3172292480.

The previous prime is 11908621223. The next prime is 11908621297. The reversal of 11908621290 is 9212680911.

It is a super-2 number, since 2×11908621290² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11908621297) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 179676 + ... + 236855.

It is an arithmetic number, because the mean of its divisors is an integer number (894085938).

Almost surely, 2^11908621290 is an apocalyptic number.

11908621290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11908621290 is an abundant number, since it is smaller than the sum of its proper divisors (16702128726).

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

11908621290 is a wasteful number, since it uses less digits than its factorization.

11908621290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 417494.

The product of its (nonzero) digits is 15552, while the sum is 39.

The spelling of 11908621290 in words is "eleven billion, nine hundred eight million, six hundred twenty-one thousand, two hundred ninety".