78203668875830 has 32 divisors (see below), whose sum is σ = 140883153668640. Its totient is φ = 31255570635520.

The previous prime is 78203668875811. The next prime is 78203668875841. The reversal of 78203668875830 is 3857886630287.

It is a super-2 number, since 2×78203668875830² (a number of 29 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 15 ways as a sum of consecutive naturals, for example, 217579706 + ... + 217938834.

It is an arithmetic number, because the mean of its divisors is an integer number (4402598552145).

Almost surely, 2^{78203668875830} is an apocalyptic number.

78203668875830 is a deficient number, since it is larger than the sum of its proper divisors (62679484792810).

78203668875830 is a wasteful number, since it uses less digits than its factorization.

78203668875830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 377104.

The product of its (nonzero) digits is 650280960, while the sum is 71.

The spelling of 78203668875830 in words is "seventy-eight trillion, two hundred three billion, six hundred sixty-eight million, eight hundred seventy-five thousand, eight hundred thirty".