629827470921 has 32 divisors (see below), whose sum is σ = 995436564480. Its totient is φ = 349958145600.

The previous prime is 629827470919. The next prime is 629827470931. The reversal of 629827470921 is 129074728926.

It is not a de Polignac number, because 629827470921 - 2¹ = 629827470919 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is not an unprimeable number, because it can be changed into a prime (629827470931) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16182330 + ... + 16221203.

It is an arithmetic number, because the mean of its divisors is an integer number (31107392640).

Almost surely, 2^629827470921 is an apocalyptic number.

It is an amenable number.

629827470921 is a deficient number, since it is larger than the sum of its proper divisors (365609093559).

629827470921 is a wasteful number, since it uses less digits than its factorization.

629827470921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32403597.

The product of its (nonzero) digits is 6096384, while the sum is 57.

The spelling of 629827470921 in words is "six hundred twenty-nine billion, eight hundred twenty-seven million, four hundred seventy thousand, nine hundred twenty-one".