21062504045 has 8 divisors (see below), whose sum is σ = 27572732640. Its totient is φ = 15318184720.

The previous prime is 21062504041. The next prime is 21062504083. The reversal of 21062504045 is 54040526012.

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

It is not a de Polignac number, because 21062504045 - 2² = 21062504041 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21062503999 and 21062504017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21062504041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 191477255 + ... + 191477364.

It is an arithmetic number, because the mean of its divisors is an integer number (3446591580).

Almost surely, 2^21062504045 is an apocalyptic number.

It is an amenable number.

21062504045 is a deficient number, since it is larger than the sum of its proper divisors (6510228595).

21062504045 is a wasteful number, since it uses less digits than its factorization.

21062504045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 382954635.

The product of its (nonzero) digits is 9600, while the sum is 29.

The spelling of 21062504045 in words is "twenty-one billion, sixty-two million, five hundred four thousand, forty-five".