7215984951552 has 648 divisors, whose sum is σ = 22833998355168. Its totient is φ = 2190473625600.

The previous prime is 7215984951547. The next prime is 7215984951569. The reversal of 7215984951552 is 2551594895127.

7215984951552 is a `hidden beast` number, since 7 + 2 + 1 + 5 + 98 + 495 + 1 + 5 + 52 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 7215984951552.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 12292989403 + ... + 12292989989.

Almost surely, 2^{7215984951552} is an apocalyptic number.

7215984951552 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7215984951552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11416999177584).

7215984951552 is an abundant number, since it is smaller than the sum of its proper divisors (15618013403616).

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

7215984951552 is a wasteful number, since it uses less digits than its factorization.

7215984951552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1007 (or 977 counting only the distinct ones).

The product of its digits is 45360000, while the sum is 63.

The spelling of 7215984951552 in words is "seven trillion, two hundred fifteen billion, nine hundred eighty-four million, nine hundred fifty-one thousand, five hundred fifty-two".