49436466640 has 240 divisors, whose sum is σ = 131395590144. Its totient is φ = 17269908480.

The previous prime is 49436466601. The next prime is 49436466641. The reversal of 49436466640 is 4666463494.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49436466641) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 29726449 + ... + 29728111.

Almost surely, 2^49436466640 is an apocalyptic number.

49436466640 is a gapful number since it is divisible by the number (40) 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 49436466640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65697795072).

49436466640 is an abundant number, since it is smaller than the sum of its proper divisors (81959123504).

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

49436466640 is a wasteful number, since it uses less digits than its factorization.

49436466640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1818 (or 1801 counting only the distinct ones).

The product of its (nonzero) digits is 8957952, while the sum is 52.

The spelling of 49436466640 in words is "forty-nine billion, four hundred thirty-six million, four hundred sixty-six thousand, six hundred forty".