21485658034 has 4 divisors (see below), whose sum is σ = 32228487054. Its totient is φ = 10742829016.

The previous prime is 21485658031. The next prime is 21485658037. The reversal of 21485658034 is 43085658412.

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

It is an interprime number because it is at equal distance from previous prime (21485658031) and next prime (21485658037).

It can be written as a sum of positive squares in only one way, i.e., 20421267409 + 1064390625 = 142903^2 + 32625^2 .

It is not an unprimeable number, because it can be changed into a prime (21485658031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5371414507 + ... + 5371414510.

Almost surely, 2^21485658034 is an apocalyptic number.

21485658034 is a deficient number, since it is larger than the sum of its proper divisors (10742829020).

21485658034 is a wasteful number, since it uses less digits than its factorization.

21485658034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10742829019.

The product of its (nonzero) digits is 921600, while the sum is 46.

The spelling of 21485658034 in words is "twenty-one billion, four hundred eighty-five million, six hundred fifty-eight thousand, thirty-four".