21057166763150 has 24 divisors (see below), whose sum is σ = 44761520205840. Its totient is φ = 7219600032960.

The previous prime is 21057166763137. The next prime is 21057166763153. The reversal of 21057166763150 is 5136766175012.

It is a super-2 number, since 2×21057166763150² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (50).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21057166763153) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30081666455 + ... + 30081667154.

It is an arithmetic number, because the mean of its divisors is an integer number (1865063341910).

Almost surely, 2^{21057166763150} is an apocalyptic number.

21057166763150 is an abundant number, since it is smaller than the sum of its proper divisors (23704353442690).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21057166763150 is a wasteful number, since it uses less digits than its factorization.

21057166763150 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60163333628 (or 60163333623 counting only the distinct ones).

The product of its (nonzero) digits is 1587600, while the sum is 50.

The spelling of 21057166763150 in words is "twenty-one trillion, fifty-seven billion, one hundred sixty-six million, seven hundred sixty-three thousand, one hundred fifty".