21365144156312 has 32 divisors (see below), whose sum is σ = 45601493460480. Its totient is φ = 9289193110560.

The previous prime is 21365144156309. The next prime is 21365144156329.

21365144156312 is nontrivially palindromic in base 10.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

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, 5277948608 + ... + 5277952655.

It is an arithmetic number, because the mean of its divisors is an integer number (1425046670640).

Almost surely, 2^{21365144156312} is an apocalyptic number.

21365144156312 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21365144156312 is an abundant number, since it is smaller than the sum of its proper divisors (24236349304168).

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

21365144156312 is a wasteful number, since it uses less digits than its factorization.

21365144156312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10555901303 (or 10555901299 counting only the distinct ones).

The product of its digits is 518400, while the sum is 44.

The spelling of 21365144156312 in words is "twenty-one trillion, three hundred sixty-five billion, one hundred forty-four million, one hundred fifty-six thousand, three hundred twelve".