53660641650 has 192 divisors, whose sum is σ = 168638063616. Its totient is φ = 10967328000.

The previous prime is 53660641553. The next prime is 53660641651. The reversal of 53660641650 is 5614606635.

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

It is not an unprimeable number, because it can be changed into a prime (53660641651) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 666469 + ... + 742631.

It is an arithmetic number, because the mean of its divisors is an integer number (878323248).

Almost surely, 2^53660641650 is an apocalyptic number.

53660641650 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 53660641650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84319031808).

53660641650 is an abundant number, since it is smaller than the sum of its proper divisors (114977421966).

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

53660641650 is a wasteful number, since it uses less digits than its factorization.

53660641650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76257 (or 76252 counting only the distinct ones).

The product of its (nonzero) digits is 388800, while the sum is 42.

The spelling of 53660641650 in words is "fifty-three billion, six hundred sixty million, six hundred forty-one thousand, six hundred fifty".