653405205122142 has 32 divisors (see below), whose sum is σ = 1425660880083840. Its totient is φ = 197994699052320.

The previous prime is 653405205122129. The next prime is 653405205122143. The reversal of 653405205122142 is 241221502504356.

It is a super-2 number, since 2×653405205122142² (a number of 30 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 653405205122094 and 653405205122103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (653405205122143) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 170041968 + ... + 173842115.

It is an arithmetic number, because the mean of its divisors is an integer number (44551902502620).

Almost surely, 2^{653405205122142} is an apocalyptic number.

653405205122142 is an abundant number, since it is smaller than the sum of its proper divisors (772255674961698).

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

653405205122142 is a wasteful number, since it uses less digits than its factorization.

653405205122142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 343912888.

The product of its (nonzero) digits is 576000, while the sum is 42.

Adding to 653405205122142 its reverse (241221502504356), we get a palindrome (894626707626498).

The spelling of 653405205122142 in words is "six hundred fifty-three trillion, four hundred five billion, two hundred five million, one hundred twenty-two thousand, one hundred forty-two".