29495478820 has 12 divisors (see below), whose sum is σ = 61940505564. Its totient is φ = 11798191520.

The previous prime is 29495478739. The next prime is 29495478823. The reversal of 29495478820 is 2887459492.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 17517051904 + 11978426916 = 132352^2 + 109446^2 .

It is not an unprimeable number, because it can be changed into a prime (29495478823) 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, 737386951 + ... + 737386990.

It is an arithmetic number, because the mean of its divisors is an integer number (5161708797).

Almost surely, 2^29495478820 is an apocalyptic number.

29495478820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

29495478820 is an abundant number, since it is smaller than the sum of its proper divisors (32445026744).

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

29495478820 is a wasteful number, since it uses less digits than its factorization.

29495478820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1474773950 (or 1474773948 counting only the distinct ones).

The product of its (nonzero) digits is 11612160, while the sum is 58.

The spelling of 29495478820 in words is "twenty-nine billion, four hundred ninety-five million, four hundred seventy-eight thousand, eight hundred twenty".