53998445380 has 96 divisors (see below), whose sum is σ = 131067683712. Its totient is φ = 18468710400.

The previous prime is 53998445377. The next prime is 53998445381. The reversal of 53998445380 is 8354489935.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (53998445381) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7218202 + ... + 7225678.

It is an arithmetic number, because the mean of its divisors is an integer number (1365288372).

Almost surely, 2^53998445380 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 53998445380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65533841856).

53998445380 is an abundant number, since it is smaller than the sum of its proper divisors (77069238332).

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

53998445380 is a wasteful number, since it uses less digits than its factorization.

53998445380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9445 (or 9443 counting only the distinct ones).

The product of its (nonzero) digits is 18662400, while the sum is 58.

The spelling of 53998445380 in words is "fifty-three billion, nine hundred ninety-eight million, four hundred forty-five thousand, three hundred eighty".