21455160224628 has 48 divisors (see below), whose sum is σ = 54068335634880. Its totient is φ = 6582562996224.

The previous prime is 21455160224627. The next prime is 21455160224677. The reversal of 21455160224628 is 82642206155412.

It is a happy number.

It is a super-2 number, since 2×21455160224628² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21455160224621) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 198120333 + ... + 198228596.

It is an arithmetic number, because the mean of its divisors is an integer number (1126423659060).

Almost surely, 2^{21455160224628} is an apocalyptic number.

It is an amenable number.

21455160224628 is an abundant number, since it is smaller than the sum of its proper divisors (32613175410252).

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

21455160224628 is a wasteful number, since it uses less digits than its factorization.

21455160224628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 396349296 (or 396349294 counting only the distinct ones).

The product of its (nonzero) digits is 1843200, while the sum is 48.

The spelling of 21455160224628 in words is "twenty-one trillion, four hundred fifty-five billion, one hundred sixty million, two hundred twenty-four thousand, six hundred twenty-eight".