499736758640 has 320 divisors, whose sum is σ = 1450916064000. Its totient is φ = 159434440704.

The previous prime is 499736758621. The next prime is 499736758643. The reversal of 499736758640 is 46857637994.

It is a super-2 number, since 2×499736758640² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (68).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (499736758643) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 41510702 + ... + 41522738.

It is an arithmetic number, because the mean of its divisors is an integer number (4534112700).

Almost surely, 2^499736758640 is an apocalyptic number.

499736758640 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 499736758640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (725458032000).

499736758640 is an abundant number, since it is smaller than the sum of its proper divisors (951179305360).

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

499736758640 is a wasteful number, since it uses less digits than its factorization.

499736758640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12177 (or 12157 counting only the distinct ones).

The product of its (nonzero) digits is 274337280, while the sum is 68.

The spelling of 499736758640 in words is "four hundred ninety-nine billion, seven hundred thirty-six million, seven hundred fifty-eight thousand, six hundred forty".