21434988577 has 8 divisors (see below), whose sum is σ = 22869123552. Its totient is φ = 20020104000.

The previous prime is 21434988563. The next prime is 21434988583. The reversal of 21434988577 is 77588943412.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21434988577 is a prime.

It is a super-2 number, since 2×21434988577² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21434988557) 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, 4810299 + ... + 4814752.

It is an arithmetic number, because the mean of its divisors is an integer number (2858640444).

Almost surely, 2^21434988577 is an apocalyptic number.

It is an amenable number.

21434988577 is a deficient number, since it is larger than the sum of its proper divisors (1434134975).

21434988577 is a wasteful number, since it uses less digits than its factorization.

21434988577 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9625199.

The product of its digits is 13547520, while the sum is 58.

The spelling of 21434988577 in words is "twenty-one billion, four hundred thirty-four million, nine hundred eighty-eight thousand, five hundred seventy-seven".