2215343251440 has 120 divisors (see below), whose sum is σ = 8116212122928. Its totient is φ = 537052907520.

The previous prime is 2215343251411. The next prime is 2215343251501. The reversal of 2215343251440 is 441523435122.

It is a happy number.

2215343251440 is a `hidden beast` number, since 2 + 2 + 1 + 534 + 32 + 51 + 4 + 40 = 666.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 2215343251395 and 2215343251404.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 139849609 + ... + 139865448.

Almost surely, 2^{2215343251440} is an apocalyptic number.

2215343251440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2215343251440 is an abundant number, since it is smaller than the sum of its proper divisors (5900868871488).

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

2215343251440 is a wasteful number, since it uses less digits than its factorization.

2215343251440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279715087 (or 279715078 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 36.

Adding to 2215343251440 its reverse (441523435122), we get a palindrome (2656866686562).

The spelling of 2215343251440 in words is "two trillion, two hundred fifteen billion, three hundred forty-three million, two hundred fifty-one thousand, four hundred forty".