53432942640 has 320 divisors, whose sum is σ = 210912215040. Its totient is φ = 10866539520.

The previous prime is 53432942621. The next prime is 53432942657. The reversal of 53432942640 is 4624923435.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 53432942592 and 53432942601.

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, 837801 + ... + 899319.

It is an arithmetic number, because the mean of its divisors is an integer number (659100672).

Almost surely, 2^53432942640 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53432942640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (105456107520).

53432942640 is an abundant number, since it is smaller than the sum of its proper divisors (157479272400).

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

53432942640 is a wasteful number, since it uses less digits than its factorization.

53432942640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61600 (or 61594 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 42.

The spelling of 53432942640 in words is "fifty-three billion, four hundred thirty-two million, nine hundred forty-two thousand, six hundred forty".