49388600646 has 384 divisors, whose sum is σ = 146644992000. Its totient is φ = 11625120000.

The previous prime is 49388600621. The next prime is 49388600647. The reversal of 49388600646 is 64600688394.

It is a junction number, because it is equal to n+sod(n) for n = 49388600592 and 49388600601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49388600647) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 82451455 + ... + 82452053.

It is an arithmetic number, because the mean of its divisors is an integer number (381888000).

Almost surely, 2^49388600646 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 49388600646, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73322496000).

49388600646 is an abundant number, since it is smaller than the sum of its proper divisors (97256391354).

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

49388600646 is a wasteful number, since it uses less digits than its factorization.

49388600646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 776 (or 773 counting only the distinct ones).

The product of its (nonzero) digits is 5971968, while the sum is 54.

The spelling of 49388600646 in words is "forty-nine billion, three hundred eighty-eight million, six hundred thousand, six hundred forty-six".