29997928903580 has 24 divisors (see below), whose sum is σ = 68722528034160. Its totient is φ = 10908337783040.

The previous prime is 29997928903531. The next prime is 29997928903583. The reversal of 29997928903580 is 8530982979992.

It is a junction number, because it is equal to n+sod(n) for n = 29997928903495 and 29997928903504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29997928903583) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68177110925 + ... + 68177111364.

It is an arithmetic number, because the mean of its divisors is an integer number (2863438668090).

Almost surely, 2^{29997928903580} is an apocalyptic number.

29997928903580 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

29997928903580 is an abundant number, since it is smaller than the sum of its proper divisors (38724599130580).

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

29997928903580 is a wasteful number, since it uses less digits than its factorization.

29997928903580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136354222309 (or 136354222307 counting only the distinct ones).

The product of its (nonzero) digits is 1587237120, while the sum is 80.

The spelling of 29997928903580 in words is "twenty-nine trillion, nine hundred ninety-seven billion, nine hundred twenty-eight million, nine hundred three thousand, five hundred eighty".