780050055501 has 24 divisors (see below), whose sum is σ = 1186100383520. Its totient is φ = 492638534496.

The previous prime is 780050055401. The next prime is 780050055509. The reversal of 780050055501 is 105550050087.

It is not a de Polignac number, because 780050055501 - 2⁹ = 780050054989 is a prime.

It is a super-2 number, since 2×780050055501² (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 (780050055509) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3679935 + ... + 3886131.

Almost surely, 2^780050055501 is an apocalyptic number.

It is an amenable number.

780050055501 is a deficient number, since it is larger than the sum of its proper divisors (406050328019).

780050055501 is a wasteful number, since it uses less digits than its factorization.

780050055501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228345 (or 228342 counting only the distinct ones).

The product of its (nonzero) digits is 35000, while the sum is 36.

The spelling of 780050055501 in words is "seven hundred eighty billion, fifty million, fifty-five thousand, five hundred one".