77539451125029 has 32 divisors (see below), whose sum is σ = 108188791413120. Its totient is φ = 49344490121472.

The previous prime is 77539451125009. The next prime is 77539451125061. The reversal of 77539451125029 is 92052115493577.

It is not a de Polignac number, because 77539451125029 - 2⁷ = 77539451124901 is a prime.

It is a super-2 number, since 2×77539451125029² (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 (77539451125009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 125275687 + ... + 125893115.

It is an arithmetic number, because the mean of its divisors is an integer number (3380899731660).

Almost surely, 2^{77539451125029} is an apocalyptic number.

It is an amenable number.

77539451125029 is a deficient number, since it is larger than the sum of its proper divisors (30649340288091).

77539451125029 is a wasteful number, since it uses less digits than its factorization.

77539451125029 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 638869.

The product of its (nonzero) digits is 23814000, while the sum is 60.

The spelling of 77539451125029 in words is "seventy-seven trillion, five hundred thirty-nine billion, four hundred fifty-one million, one hundred twenty-five thousand, twenty-nine".