21767414002 has 4 divisors (see below), whose sum is σ = 32651121006. Its totient is φ = 10883707000.

The previous prime is 21767413991. The next prime is 21767414003. The reversal of 21767414002 is 20041476712.

It is a happy number.

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., 14989349761 + 6778064241 = 122431^2 + 82329^2 .

It is not an unprimeable number, because it can be changed into a prime (21767414003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5441853499 + ... + 5441853502.

Almost surely, 2^21767414002 is an apocalyptic number.

21767414002 is a deficient number, since it is larger than the sum of its proper divisors (10883707004).

21767414002 is a wasteful number, since it uses less digits than its factorization.

21767414002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10883707003.

The product of its (nonzero) digits is 18816, while the sum is 34.

The spelling of 21767414002 in words is "twenty-one billion, seven hundred sixty-seven million, four hundred fourteen thousand, two".