53326364440 has 32 divisors (see below), whose sum is σ = 126299286000. Its totient is φ = 20207885184.

The previous prime is 53326364423. The next prime is 53326364467. The reversal of 53326364440 is 4446362335.

It is a happy number.

It is a super-2 number, since 2×53326364440² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 53326364393 and 53326364402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35082375 + ... + 35083894.

Almost surely, 2^53326364440 is an apocalyptic number.

It is an amenable number.

53326364440 is an abundant number, since it is smaller than the sum of its proper divisors (72972921560).

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

53326364440 is a wasteful number, since it uses less digits than its factorization.

53326364440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70166299 (or 70166295 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 40.

The spelling of 53326364440 in words is "fifty-three billion, three hundred twenty-six million, three hundred sixty-four thousand, four hundred forty".