53520404626509 has 32 divisors (see below), whose sum is σ = 75903527589120. Its totient is φ = 33428018936832.

The previous prime is 53520404626459. The next prime is 53520404626523. The reversal of 53520404626509 is 90562640402535.

It is not a de Polignac number, because 53520404626509 - 2¹⁵ = 53520404593741 is a prime.

It is a super-2 number, since 2×53520404626509² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53520404626529) 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, 57548287 + ... + 58470899.

It is an arithmetic number, because the mean of its divisors is an integer number (2371985237160).

Almost surely, 2^{53520404626509} is an apocalyptic number.

It is an amenable number.

53520404626509 is a deficient number, since it is larger than the sum of its proper divisors (22383122962611).

53520404626509 is a wasteful number, since it uses less digits than its factorization.

53520404626509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 927829.

The product of its (nonzero) digits is 7776000, while the sum is 51.

The spelling of 53520404626509 in words is "fifty-three trillion, five hundred twenty billion, four hundred four million, six hundred twenty-six thousand, five hundred nine".