20276457521 has 8 divisors (see below), whose sum is σ = 20580311520. Its totient is φ = 19974721408.

The previous prime is 20276457503. The next prime is 20276457529. The reversal of 20276457521 is 12575467202.

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

It is a cyclic number.

It is not a de Polignac number, because 20276457521 - 2¹⁴ = 20276441137 is a prime.

It is a super-2 number, since 2×20276457521² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20276457529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 510176 + ... + 548481.

It is an arithmetic number, because the mean of its divisors is an integer number (2572538940).

Almost surely, 2^20276457521 is an apocalyptic number.

It is an amenable number.

20276457521 is a deficient number, since it is larger than the sum of its proper divisors (303853999).

20276457521 is a wasteful number, since it uses less digits than its factorization.

20276457521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1058943.

The product of its (nonzero) digits is 235200, while the sum is 41.

The spelling of 20276457521 in words is "twenty billion, two hundred seventy-six million, four hundred fifty-seven thousand, five hundred twenty-one".