812268057507 has 16 divisors (see below), whose sum is σ = 1148066398080. Its totient is φ = 509065045632.

The previous prime is 812268057463. The next prime is 812268057521. The reversal of 812268057507 is 705750862218.

It is not a de Polignac number, because 812268057507 - 2³¹ = 810120573859 is a prime.

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

It is a self number, because there is not a number n which added to its sum of digits gives 812268057507.

It is not an unprimeable number, because it can be changed into a prime (812268057547) 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, 9226753 + ... + 9314370.

It is an arithmetic number, because the mean of its divisors is an integer number (71754149880).

Almost surely, 2^812268057507 is an apocalyptic number.

812268057507 is a deficient number, since it is larger than the sum of its proper divisors (335798340573).

812268057507 is a wasteful number, since it uses less digits than its factorization.

812268057507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18542002.

The product of its (nonzero) digits is 1881600, while the sum is 51.

The spelling of 812268057507 in words is "eight hundred twelve billion, two hundred sixty-eight million, fifty-seven thousand, five hundred seven".