53473781000 has 256 divisors, whose sum is σ = 133678771200. Its totient is φ = 19979520000.

The previous prime is 53473780999. The next prime is 53473781017. The reversal of 53473781000 is 18737435.

It is a super-2 number, since 2×53473781000² (a number of 22 digits) contains 22 as substring.

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, 309096914 + ... + 309097086.

It is an arithmetic number, because the mean of its divisors is an integer number (522182700).

Almost surely, 2^53473781000 is an apocalyptic number.

53473781000 is a gapful number since it is divisible by the number (50) 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 53473781000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66839385600).

53473781000 is an abundant number, since it is smaller than the sum of its proper divisors (80204990200).

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

53473781000 is a wasteful number, since it uses less digits than its factorization.

53473781000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 457 (or 443 counting only the distinct ones).

The product of its (nonzero) digits is 70560, while the sum is 38.

The spelling of 53473781000 in words is "fifty-three billion, four hundred seventy-three million, seven hundred eighty-one thousand".