29081777148 has 18 divisors (see below), whose sum is σ = 73512270104. Its totient is φ = 9693925704.

The previous prime is 29081777147. The next prime is 29081777159. The reversal of 29081777148 is 84177718092.

It is a tau number, because it is divible by the number of its divisors (18).

It is a junction number, because it is equal to n+sod(n) for n = 29081777094 and 29081777103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29081777147) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 403913536 + ... + 403913607.

Almost surely, 2^29081777148 is an apocalyptic number.

It is an amenable number.

29081777148 is an abundant number, since it is smaller than the sum of its proper divisors (44430492956).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

29081777148 is a wasteful number, since it uses less digits than its factorization.

29081777148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 807827153 (or 807827148 counting only the distinct ones).

The product of its (nonzero) digits is 1580544, while the sum is 54.

The spelling of 29081777148 in words is "twenty-nine billion, eighty-one million, seven hundred seventy-seven thousand, one hundred forty-eight".