780323959801 has 16 divisors (see below), whose sum is σ = 815651854848. Its totient is φ = 745113600000.

The previous prime is 780323959771. The next prime is 780323959913. The reversal of 780323959801 is 108959323087.

It is a 5-Lehmer number, since φ(780323959801) divides (780323959801-1)⁵.

It is a cyclic number.

It is not a de Polignac number, because 780323959801 - 2¹⁷ = 780323828729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (780323959301) 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, 54178201 + ... + 54192601.

It is an arithmetic number, because the mean of its divisors is an integer number (50978240928).

Almost surely, 2^780323959801 is an apocalyptic number.

780323959801 is the 472176-th centered heptagonal number.

It is an amenable number.

780323959801 is a deficient number, since it is larger than the sum of its proper divisors (35327895047).

780323959801 is a wasteful number, since it uses less digits than its factorization.

780323959801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18312.

The product of its (nonzero) digits is 3265920, while the sum is 55.

The spelling of 780323959801 in words is "seven hundred eighty billion, three hundred twenty-three million, nine hundred fifty-nine thousand, eight hundred one".