2221679473650 has 480 divisors, whose sum is σ = 7607902313088. Its totient is φ = 468108979200.

The previous prime is 2221679473627. The next prime is 2221679473681. The reversal of 2221679473650 is 563749761222.

2221679473650 is a `hidden beast` number, since 2 + 2 + 2 + 167 + 9 + 473 + 6 + 5 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 239 ways as a sum of consecutive naturals, for example, 298890334 + ... + 298897766.

Almost surely, 2^{2221679473650} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2221679473650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3803951156544).

2221679473650 is an abundant number, since it is smaller than the sum of its proper divisors (5386222839438).

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

2221679473650 is a wasteful number, since it uses less digits than its factorization.

2221679473650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8288 (or 8274 counting only the distinct ones).

The product of its (nonzero) digits is 7620480, while the sum is 54.

The spelling of 2221679473650 in words is "two trillion, two hundred twenty-one billion, six hundred seventy-nine million, four hundred seventy-three thousand, six hundred fifty".