53402352555440 has 80 divisors (see below), whose sum is σ = 143896238622720. Its totient is φ = 18051499441920.

The previous prime is 53402352555413. The next prime is 53402352555449. The reversal of 53402352555440 is 4455525320435.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×53402352555440² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (53402352555449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 671519000 + ... + 671598519.

It is an arithmetic number, because the mean of its divisors is an integer number (1798702982784).

Almost surely, 2^{53402352555440} is an apocalyptic number.

It is an amenable number.

53402352555440 is an abundant number, since it is smaller than the sum of its proper divisors (90493886067280).

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

53402352555440 is a wasteful number, since it uses less digits than its factorization.

53402352555440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1343117610 (or 1343117604 counting only the distinct ones).

The product of its (nonzero) digits is 7200000, while the sum is 47.

Adding to 53402352555440 its reverse (4455525320435), we get a palindrome (57857877875875).

The spelling of 53402352555440 in words is "fifty-three trillion, four hundred two billion, three hundred fifty-two million, five hundred fifty-five thousand, four hundred forty".