11969231620 has 24 divisors (see below), whose sum is σ = 25316222400. Its totient is φ = 4753247712.

The previous prime is 11969231597. The next prime is 11969231629. The reversal of 11969231620 is 2613296911.

It is not an unprimeable number, because it can be changed into a prime (11969231629) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2149960 + ... + 2155519.

It is an arithmetic number, because the mean of its divisors is an integer number (1054842600).

Almost surely, 2^11969231620 is an apocalyptic number.

11969231620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11969231620 is an abundant number, since it is smaller than the sum of its proper divisors (13346990780).

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

11969231620 is a wasteful number, since it uses less digits than its factorization.

11969231620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4305627 (or 4305625 counting only the distinct ones).

The product of its (nonzero) digits is 34992, while the sum is 40.

The spelling of 11969231620 in words is "eleven billion, nine hundred sixty-nine million, two hundred thirty-one thousand, six hundred twenty".