11621220737 has 8 divisors (see below), whose sum is σ = 13506504000. Its totient is φ = 9792214704.

The previous prime is 11621220733. The next prime is 11621220763. The reversal of 11621220737 is 73702212611.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11621220737 - 2² = 11621220733 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11621220733) 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, 14068862 + ... + 14069687.

It is an arithmetic number, because the mean of its divisors is an integer number (1688313000).

Almost surely, 2^11621220737 is an apocalyptic number.

It is an amenable number.

11621220737 is a deficient number, since it is larger than the sum of its proper divisors (1885283263).

11621220737 is an equidigital number, since it uses as much as digits as its factorization.

11621220737 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28138615.

The product of its (nonzero) digits is 7056, while the sum is 32.

The spelling of 11621220737 in words is "eleven billion, six hundred twenty-one million, two hundred twenty thousand, seven hundred thirty-seven".