780264884431 has 4 divisors (see below), whose sum is σ = 790141655200. Its totient is φ = 770388113664.

The previous prime is 780264884423. The next prime is 780264884437. The reversal of 780264884431 is 134488462087.

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

It is a cyclic number.

It is not a de Polignac number, because 780264884431 - 2³ = 780264884423 is a prime.

It is a super-2 number, since 2×780264884431² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (780264884437) 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, 4938385266 + ... + 4938385423.

It is an arithmetic number, because the mean of its divisors is an integer number (197535413800).

Almost surely, 2^780264884431 is an apocalyptic number.

780264884431 is a deficient number, since it is larger than the sum of its proper divisors (9876770769).

780264884431 is an equidigital number, since it uses as much as digits as its factorization.

780264884431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9876770768.

The product of its (nonzero) digits is 8257536, while the sum is 55.

The spelling of 780264884431 in words is "seven hundred eighty billion, two hundred sixty-four million, eight hundred eighty-four thousand, four hundred thirty-one".