6420261576245 has 16 divisors (see below), whose sum is σ = 8404809775488. Its totient is φ = 4669223528640.

The previous prime is 6420261576241. The next prime is 6420261576277. The reversal of 6420261576245 is 5426751620246.

It is not a de Polignac number, because 6420261576245 - 2² = 6420261576241 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6420261576193 and 6420261576202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6420261576241) 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, 4063712 + ... + 5417958.

It is an arithmetic number, because the mean of its divisors is an integer number (525300610968).

Almost surely, 2^{6420261576245} is an apocalyptic number.

It is an amenable number.

6420261576245 is a deficient number, since it is larger than the sum of its proper divisors (1984548199243).

6420261576245 is a wasteful number, since it uses less digits than its factorization.

6420261576245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1440460.

The product of its (nonzero) digits is 4838400, while the sum is 50.

The spelling of 6420261576245 in words is "six trillion, four hundred twenty billion, two hundred sixty-one million, five hundred seventy-six thousand, two hundred forty-five".