53140021504 has 36 divisors (see below), whose sum is σ = 106196387920. Its totient is φ = 26538969600.

The previous prime is 53140021469. The next prime is 53140021531. The reversal of 53140021504 is 40512004135.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 99079 + ... + 340729.

Almost surely, 2^53140021504 is an apocalyptic number.

It is an amenable number.

53140021504 is a deficient number, since it is larger than the sum of its proper divisors (53056366416).

53140021504 is an equidigital number, since it uses as much as digits as its factorization.

53140021504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242526 (or 242512 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

Adding to 53140021504 its reverse (40512004135), we get a palindrome (93652025639).

The spelling of 53140021504 in words is "fifty-three billion, one hundred forty million, twenty-one thousand, five hundred four".