81629147702 has 8 divisors (see below), whose sum is σ = 125430153912. Its totient is φ = 39819096400.

The previous prime is 81629147701. The next prime is 81629147711. The reversal of 81629147702 is 20774192618.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81629147701) 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, 497738624 + ... + 497738787.

It is an arithmetic number, because the mean of its divisors is an integer number (15678769239).

Almost surely, 2^81629147702 is an apocalyptic number.

81629147702 is a gapful number since it is divisible by the number (82) formed by its first and last digit.

81629147702 is a deficient number, since it is larger than the sum of its proper divisors (43801006210).

81629147702 is a wasteful number, since it uses less digits than its factorization.

81629147702 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 995477454.

The product of its (nonzero) digits is 338688, while the sum is 47.

The spelling of 81629147702 in words is "eighty-one billion, six hundred twenty-nine million, one hundred forty-seven thousand, seven hundred two".