6615646425630 has 192 divisors, whose sum is σ = 19508403253248. Its totient is φ = 1599750725760.

The previous prime is 6615646425533. The next prime is 6615646425697. The reversal of 6615646425630 is 365246465166.

6615646425630 is a `hidden beast` number, since 6 + 6 + 1 + 564 + 6 + 42 + 5 + 6 + 30 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 10300099 + ... + 10923521.

It is an arithmetic number, because the mean of its divisors is an integer number (101606266944).

Almost surely, 2^{6615646425630} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6615646425630, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9754201626624).

6615646425630 is an abundant number, since it is smaller than the sum of its proper divisors (12892756827618).

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

6615646425630 is a wasteful number, since it uses less digits than its factorization.

6615646425630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 623853 (or 623841 counting only the distinct ones).

The product of its (nonzero) digits is 18662400, while the sum is 54.

The spelling of 6615646425630 in words is "six trillion, six hundred fifteen billion, six hundred forty-six million, four hundred twenty-five thousand, six hundred thirty".