29656145920 has 112 divisors (see below), whose sum is σ = 71743385088. Its totient is φ = 11766988800.

The previous prime is 29656145903. The next prime is 29656145933. The reversal of 29656145920 is 2954165692.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5199070 + ... + 5204770.

Almost surely, 2^29656145920 is an apocalyptic number.

29656145920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 29656145920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35871692544).

29656145920 is an abundant number, since it is smaller than the sum of its proper divisors (42087239168).

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

29656145920 is an equidigital number, since it uses as much as digits as its factorization.

29656145920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5859 (or 5835 counting only the distinct ones).

The product of its (nonzero) digits is 1166400, while the sum is 49.

The spelling of 29656145920 in words is "twenty-nine billion, six hundred fifty-six million, one hundred forty-five thousand, nine hundred twenty".