29880761556 has 24 divisors (see below), whose sum is σ = 69737231200. Its totient is φ = 9958046112.

The previous prime is 29880761551. The next prime is 29880761557. The reversal of 29880761556 is 65516708892.

It is a super-2 number, since 2×29880761556² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 29880761496 and 29880761505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29880761551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 219106 + ... + 328281.

Almost surely, 2^29880761556 is an apocalyptic number.

It is an amenable number.

29880761556 is an abundant number, since it is smaller than the sum of its proper divisors (39856469644).

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

29880761556 is a wasteful number, since it uses less digits than its factorization.

29880761556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 551943 (or 551941 counting only the distinct ones).

The product of its (nonzero) digits is 7257600, while the sum is 57.

The spelling of 29880761556 in words is "twenty-nine billion, eight hundred eighty million, seven hundred sixty-one thousand, five hundred fifty-six".