52736631390 has 128 divisors (see below), whose sum is σ = 144407577600. Its totient is φ = 13690097280.

The previous prime is 52736631377. The next prime is 52736631407. The reversal of 52736631390 is 9313663725.

52736631390 is a `hidden beast` number, since 5 + 2 + 7 + 3 + 6 + 631 + 3 + 9 + 0 = 666.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1624720 + ... + 1656860.

It is an arithmetic number, because the mean of its divisors is an integer number (1128184200).

Almost surely, 2^52736631390 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 52736631390, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72203788800).

52736631390 is an abundant number, since it is smaller than the sum of its proper divisors (91670946210).

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

52736631390 is a wasteful number, since it uses less digits than its factorization.

52736631390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32319 (or 32313 counting only the distinct ones).

The product of its (nonzero) digits is 612360, while the sum is 45.

The spelling of 52736631390 in words is "fifty-two billion, seven hundred thirty-six million, six hundred thirty-one thousand, three hundred ninety".