21151453160 has 32 divisors (see below), whose sum is σ = 47605020840. Its totient is φ = 8458047744.

The previous prime is 21151453129. The next prime is 21151453181. The reversal of 21151453160 is 6135415112.

It can be written as a sum of positive squares in 4 ways, for example, as 20705483236 + 445969924 = 143894^2 + 21118^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59054 + ... + 213986.

Almost surely, 2^21151453160 is an apocalyptic number.

21151453160 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21151453160 is an abundant number, since it is smaller than the sum of its proper divisors (26453567680).

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

21151453160 is a wasteful number, since it uses less digits than its factorization.

21151453160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158357 (or 158353 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 29.

Adding to 21151453160 its reverse (6135415112), we get a palindrome (27286868272).

The spelling of 21151453160 in words is "twenty-one billion, one hundred fifty-one million, four hundred fifty-three thousand, one hundred sixty".