21629480762 has 4 divisors (see below), whose sum is σ = 32444221146. Its totient is φ = 10814740380.

The previous prime is 21629480753. The next prime is 21629480767. The reversal of 21629480762 is 26708492612.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 21132146161 + 497334601 = 145369^2 + 22301^2 .

It is not an unprimeable number, because it can be changed into a prime (21629480767) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5407370189 + ... + 5407370192.

Almost surely, 2^21629480762 is an apocalyptic number.

21629480762 is a deficient number, since it is larger than the sum of its proper divisors (10814740384).

21629480762 is a wasteful number, since it uses less digits than its factorization.

21629480762 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10814740383.

The product of its (nonzero) digits is 580608, while the sum is 47.

The spelling of 21629480762 in words is "twenty-one billion, six hundred twenty-nine million, four hundred eighty thousand, seven hundred sixty-two".