21151462024 has 32 divisors (see below), whose sum is σ = 49444977600. Its totient is φ = 8240829120.

The previous prime is 21151461983. The next prime is 21151462051. The reversal of 21151462024 is 42026415112.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 21151461983 and 21151462001.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17167779 + ... + 17169010.

It is an arithmetic number, because the mean of its divisors is an integer number (1545155550).

Almost surely, 2^21151462024 is an apocalyptic number.

It is an amenable number.

21151462024 is an abundant number, since it is smaller than the sum of its proper divisors (28293515576).

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

21151462024 is a wasteful number, since it uses less digits than its factorization.

21151462024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34336813 (or 34336809 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 28.

Adding to 21151462024 its reverse (42026415112), we get a palindrome (63177877136).

The spelling of 21151462024 in words is "twenty-one billion, one hundred fifty-one million, four hundred sixty-two thousand, twenty-four".