780406672608 has 144 divisors (see below), whose sum is σ = 2372255042976. Its totient is φ = 242756321280.

The previous prime is 780406672559. The next prime is 780406672609. The reversal of 780406672608 is 806276604087.

It is a tau number, because it is divible by the number of its divisors (144).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (780406672609) 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, 1165185 + ... + 1708352.

It is an arithmetic number, because the mean of its divisors is an integer number (16473993354).

Almost surely, 2^780406672608 is an apocalyptic number.

It is an amenable number.

780406672608 is an abundant number, since it is smaller than the sum of its proper divisors (1591848370368).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

780406672608 is a wasteful number, since it uses less digits than its factorization.

780406672608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2873617 (or 2873606 counting only the distinct ones).

The product of its (nonzero) digits is 5419008, while the sum is 54.

The spelling of 780406672608 in words is "seven hundred eighty billion, four hundred six million, six hundred seventy-two thousand, six hundred eight".