780120387158 has 16 divisors (see below), whose sum is σ = 1355669089440. Its totient is φ = 329757345216.

The previous prime is 780120387131. The next prime is 780120387161. The reversal of 780120387158 is 851783021087.

It is a super-2 number, since 2×780120387158² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 381662573 + ... + 381664616.

It is an arithmetic number, because the mean of its divisors is an integer number (84729318090).

Almost surely, 2^780120387158 is an apocalyptic number.

780120387158 is a deficient number, since it is larger than the sum of its proper divisors (575548702282).

780120387158 is a wasteful number, since it uses less digits than its factorization.

780120387158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 763327271.

The product of its (nonzero) digits is 752640, while the sum is 50.

The spelling of 780120387158 in words is "seven hundred eighty billion, one hundred twenty million, three hundred eighty-seven thousand, one hundred fifty-eight".