29145542977 has 4 divisors (see below), whose sum is σ = 29145891460. Its totient is φ = 29145194496.

The previous prime is 29145542971. The next prime is 29145542981. The reversal of 29145542977 is 77924554192.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 19775109376 + 9370433601 = 140624^2 + 96801^2 .

It is a 3-Lehmer number, since φ(29145542977) divides (29145542977-1)³.

It is a cyclic number.

It is not a de Polignac number, because 29145542977 - 2³ = 29145542969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (29145542971) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34849 + ... + 243937.

It is an arithmetic number, because the mean of its divisors is an integer number (7286472865).

It is a Poulet number, since it divides 2^29145542976-1.

Almost surely, 2^29145542977 is an apocalyptic number.

29145542977 is the 139393-rd pentagonal number.

It is an amenable number.

29145542977 is a deficient number, since it is larger than the sum of its proper divisors (348483).

29145542977 is a wasteful number, since it uses less digits than its factorization.

29145542977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 348482.

The product of its digits is 6350400, while the sum is 55.

The spelling of 29145542977 in words is "twenty-nine billion, one hundred forty-five million, five hundred forty-two thousand, nine hundred seventy-seven".