20551065542 has 8 divisors (see below), whose sum is σ = 35230398096. Its totient is φ = 8807599512.

The previous prime is 20551065529. The next prime is 20551065559. The reversal of 20551065542 is 24556015502.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 733966613 + ... + 733966640.

It is an arithmetic number, because the mean of its divisors is an integer number (4403799762).

Almost surely, 2^20551065542 is an apocalyptic number.

20551065542 is a deficient number, since it is larger than the sum of its proper divisors (14679332554).

20551065542 is a wasteful number, since it uses less digits than its factorization.

20551065542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1467933262.

The product of its (nonzero) digits is 60000, while the sum is 35.

The spelling of 20551065542 in words is "twenty billion, five hundred fifty-one million, sixty-five thousand, five hundred forty-two".