20610622551 has 8 divisors (see below), whose sum is σ = 28151094384. Its totient is φ = 13405282880.

The previous prime is 20610622547. The next prime is 20610622577. The reversal of 20610622551 is 15522601602.

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 20610622551 - 2² = 20610622547 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20610622511) 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, 83782896 + ... + 83783141.

It is an arithmetic number, because the mean of its divisors is an integer number (3518886798).

Almost surely, 2^20610622551 is an apocalyptic number.

20610622551 is a deficient number, since it is larger than the sum of its proper divisors (7540471833).

20610622551 is a wasteful number, since it uses less digits than its factorization.

20610622551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167566081.

The product of its (nonzero) digits is 7200, while the sum is 30.

The spelling of 20610622551 in words is "twenty billion, six hundred ten million, six hundred twenty-two thousand, five hundred fifty-one".