11621401646 has 8 divisors (see below), whose sum is σ = 17443231680. Its totient is φ = 5806991088.

The previous prime is 11621401643. The next prime is 11621401711. The reversal of 11621401646 is 64610412611.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11621401643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1850951 + ... + 1857218.

It is an arithmetic number, because the mean of its divisors is an integer number (2180403960).

Almost surely, 2^11621401646 is an apocalyptic number.

11621401646 is a deficient number, since it is larger than the sum of its proper divisors (5821830034).

11621401646 is a wasteful number, since it uses less digits than its factorization.

11621401646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3709738.

The product of its (nonzero) digits is 6912, while the sum is 32.

The spelling of 11621401646 in words is "eleven billion, six hundred twenty-one million, four hundred one thousand, six hundred forty-six".