35220663972 has 192 divisors, whose sum is σ = 99954982400. Its totient is φ = 10793212416.

The previous prime is 35220663953. The next prime is 35220664019. The reversal of 35220663972 is 27936602253.

35220663972 is a `hidden beast` number, since 3 + 5 + 2 + 2 + 0 + 6 + 639 + 7 + 2 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 38324529 + ... + 38325447.

Almost surely, 2^35220663972 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 35220663972, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49977491200).

35220663972 is an abundant number, since it is smaller than the sum of its proper divisors (64734318428).

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

35220663972 is a wasteful number, since it uses less digits than its factorization.

35220663972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1294 (or 1274 counting only the distinct ones).

The product of its (nonzero) digits is 816480, while the sum is 45.

The spelling of 35220663972 in words is "thirty-five billion, two hundred twenty million, six hundred sixty-three thousand, nine hundred seventy-two".