53498231820 has 144 divisors (see below), whose sum is σ = 177100009632. Its totient is φ = 12964177920.

The previous prime is 53498231789. The next prime is 53498231869. The reversal of 53498231820 is 2813289435.

53498231820 is a `hidden beast` number, since 53 + 498 + 2 + 31 + 82 + 0 = 666.

53498231820 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 8417764 + ... + 8424116.

It is an arithmetic number, because the mean of its divisors is an integer number (1229861178).

Almost surely, 2^53498231820 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 53498231820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88550004816).

53498231820 is an abundant number, since it is smaller than the sum of its proper divisors (123601777812).

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

53498231820 is a wasteful number, since it uses less digits than its factorization.

53498231820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10632 (or 10627 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 45.

The spelling of 53498231820 in words is "fifty-three billion, four hundred ninety-eight million, two hundred thirty-one thousand, eight hundred twenty".