97678459129 has 4 divisors (see below), whose sum is σ = 97680597840. Its totient is φ = 97676320420.

The previous prime is 97678459103. The next prime is 97678459169. The reversal of 97678459129 is 92195487679.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 92195487679 = 1871 ⋅49276049.

It is a cyclic number.

It is not a de Polignac number, because 97678459129 - 2⁷ = 97678459001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (97678459169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 999319 + ... + 1092700.

It is an arithmetic number, because the mean of its divisors is an integer number (24420149460).

Almost surely, 2^97678459129 is an apocalyptic number.

It is an amenable number.

97678459129 is a deficient number, since it is larger than the sum of its proper divisors (2138711).

97678459129 is a wasteful number, since it uses less digits than its factorization.

97678459129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2138710.

The product of its digits is 68584320, while the sum is 67.

The spelling of 97678459129 in words is "ninety-seven billion, six hundred seventy-eight million, four hundred fifty-nine thousand, one hundred twenty-nine".