78430128475431 has 16 divisors (see below), whose sum is σ = 110909736864000. Its totient is φ = 49128905624448.

The previous prime is 78430128475417. The next prime is 78430128475541. The reversal of 78430128475431 is 13457482103487.

It is not a de Polignac number, because 78430128475431 - 2¹¹ = 78430128473383 is a prime.

It is a super-2 number, since 2×78430128475431² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78430128475411) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1283646961 + ... + 1283708058.

It is an arithmetic number, because the mean of its divisors is an integer number (6931858554000).

Almost surely, 2^{78430128475431} is an apocalyptic number.

78430128475431 is a deficient number, since it is larger than the sum of its proper divisors (32479608388569).

78430128475431 is a wasteful number, since it uses less digits than its factorization.

78430128475431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2567355638.

The product of its (nonzero) digits is 18063360, while the sum is 57.

The spelling of 78430128475431 in words is "seventy-eight trillion, four hundred thirty billion, one hundred twenty-eight million, four hundred seventy-five thousand, four hundred thirty-one".