78136621575230 has 32 divisors (see below), whose sum is σ = 141109185659904. Its totient is φ = 31151846378016.

The previous prime is 78136621575227. The next prime is 78136621575241. The reversal of 78136621575230 is 3257512663187.

It is a super-2 number, since 2×78136621575230² (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, 4836182 + ... + 13403801.

It is an arithmetic number, because the mean of its divisors is an integer number (4409662051872).

Almost surely, 2^{78136621575230} is an apocalyptic number.

78136621575230 is a deficient number, since it is larger than the sum of its proper divisors (62972564084674).

78136621575230 is a wasteful number, since it uses less digits than its factorization.

78136621575230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18241400.

The product of its (nonzero) digits is 12700800, while the sum is 56.

The spelling of 78136621575230 in words is "seventy-eight trillion, one hundred thirty-six billion, six hundred twenty-one million, five hundred seventy-five thousand, two hundred thirty".