4663051391646 has 128 divisors (see below), whose sum is σ = 10865627136000. Its totient is φ = 1480454381952.

The previous prime is 4663051391599. The next prime is 4663051391689. The reversal of 4663051391646 is 6461931503664.

It is a happy number.

4663051391646 is a `hidden beast` number, since 4 + 6 + 6 + 30 + 513 + 91 + 6 + 4 + 6 = 666.

It is a super-2 number, since 2×4663051391646² (a number of 26 digits) contains 22 as substring.

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

It is a junction number, because it is equal to n+sod(n) for n = 4663051391592 and 4663051391601.

It is a congruent number.

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, 34106595 + ... + 34243041.

It is an arithmetic number, because the mean of its divisors is an integer number (84887712000).

Almost surely, 2^{4663051391646} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4663051391646, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5432813568000).

4663051391646 is an abundant number, since it is smaller than the sum of its proper divisors (6202575744354).

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

4663051391646 is a wasteful number, since it uses less digits than its factorization.

4663051391646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136783 (or 136777 counting only the distinct ones).

The product of its (nonzero) digits is 8398080, while the sum is 54.

The spelling of 4663051391646 in words is "four trillion, six hundred sixty-three billion, fifty-one million, three hundred ninety-one thousand, six hundred forty-six".