21650552054 has 8 divisors (see below), whose sum is σ = 32549138280. Its totient is φ = 10800839296.

The previous prime is 21650552051. The next prime is 21650552057. The reversal of 21650552054 is 45025505612.

It is an interprime number because it is at equal distance from previous prime (21650552051) and next prime (21650552057).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21650552051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12217259 + ... + 12219030.

It is an arithmetic number, because the mean of its divisors is an integer number (4068642285).

Almost surely, 2^21650552054 is an apocalyptic number.

21650552054 is a deficient number, since it is larger than the sum of its proper divisors (10898586226).

21650552054 is a wasteful number, since it uses less digits than its factorization.

21650552054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24436734.

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

The spelling of 21650552054 in words is "twenty-one billion, six hundred fifty million, five hundred fifty-two thousand, fifty-four".