620514315460253 has 4 divisors (see below), whose sum is σ = 620534553392988. Its totient is φ = 620494077527520.

The previous prime is 620514315460231. The next prime is 620514315460297. The reversal of 620514315460253 is 352064513415026.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 617374055022169 + 3140260438084 = 24847013^2 + 1772078^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-620514315460253 is a prime.

It is a super-2 number, since 2×620514315460253² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 620514315460198 and 620514315460207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (620514315468253) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10118920376 + ... + 10118981697.

It is an arithmetic number, because the mean of its divisors is an integer number (155133638348247).

Almost surely, 2^{620514315460253} is an apocalyptic number.

It is an amenable number.

620514315460253 is a deficient number, since it is larger than the sum of its proper divisors (20237932735).

620514315460253 is a wasteful number, since it uses less digits than its factorization.

620514315460253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20237932734.

The product of its (nonzero) digits is 2592000, while the sum is 47.

Adding to 620514315460253 its reverse (352064513415026), we get a palindrome (972578828875279).

The spelling of 620514315460253 in words is "six hundred twenty trillion, five hundred fourteen billion, three hundred fifteen million, four hundred sixty thousand, two hundred fifty-three".