53534787840 has 576 divisors, whose sum is σ = 198358917120. Its totient is φ = 13657006080.

The previous prime is 53534787829. The next prime is 53534787851. The reversal of 53534787840 is 4878743535.

It is a happy number.

53534787840 is a `hidden beast` number, since 53 + 53 + 478 + 78 + 4 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (53534787829) and next prime (53534787851).

It is a tau number, because it is divible by the number of its divisors (576).

It is a Harshad number since it is a multiple of its sum of digits (54).

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, 114635287 + ... + 114635753.

It is an arithmetic number, because the mean of its divisors is an integer number (344373120).

Almost surely, 2^53534787840 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 53534787840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99179458560).

53534787840 is an abundant number, since it is smaller than the sum of its proper divisors (144824129280).

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

53534787840 is a wasteful number, since it uses less digits than its factorization.

53534787840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 635 (or 615 counting only the distinct ones).

The product of its (nonzero) digits is 11289600, while the sum is 54.

The spelling of 53534787840 in words is "fifty-three billion, five hundred thirty-four million, seven hundred eighty-seven thousand, eight hundred forty".