2115464197440 has 112 divisors (see below), whose sum is σ = 7327198756800. Its totient is φ = 512839802880.

The previous prime is 2115464197421. The next prime is 2115464197447. The reversal of 2115464197440 is 447914645112.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 2115464197440.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2115464197447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 100153465 + ... + 100174584.

Almost surely, 2^{2115464197440} is an apocalyptic number.

2115464197440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2115464197440 is an abundant number, since it is smaller than the sum of its proper divisors (5211734559360).

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

2115464197440 is a wasteful number, since it uses less digits than its factorization.

2115464197440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200328080 (or 200328070 counting only the distinct ones).

The product of its (nonzero) digits is 967680, while the sum is 48.

The spelling of 2115464197440 in words is "two trillion, one hundred fifteen billion, four hundred sixty-four million, one hundred ninety-seven thousand, four hundred forty".