129536743479 has 96 divisors (see below), whose sum is σ = 221030423040. Its totient is φ = 66796773120.

The previous prime is 129536743459. The next prime is 129536743507. The reversal of 129536743479 is 974347635921.

It is a happy number.

It is not a de Polignac number, because 129536743479 - 2⁹ = 129536742967 is a prime.

It is a super-2 number, since 2×129536743479² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129536743409) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 3297934 + ... + 3336980.

It is an arithmetic number, because the mean of its divisors is an integer number (2302400240).

Almost surely, 2^129536743479 is an apocalyptic number.

129536743479 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

129536743479 is a deficient number, since it is larger than the sum of its proper divisors (91493679561).

129536743479 is a wasteful number, since it uses less digits than its factorization.

129536743479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39141 (or 39130 counting only the distinct ones).

The product of its digits is 34292160, while the sum is 60.

The spelling of 129536743479 in words is "one hundred twenty-nine billion, five hundred thirty-six million, seven hundred forty-three thousand, four hundred seventy-nine".