2120497357440 has 512 divisors, whose sum is σ = 8793313136640. Its totient is φ = 421464637440.

The previous prime is 2120497357427. The next prime is 2120497357471. The reversal of 2120497357440 is 447537940212.

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 2120497357440.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3088512 + ... + 3712128.

It is an arithmetic number, because the mean of its divisors is an integer number (17174439720).

Almost surely, 2^{2120497357440} is an apocalyptic number.

2120497357440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2120497357440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4396656568320).

2120497357440 is an abundant number, since it is smaller than the sum of its proper divisors (6672815779200).

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

2120497357440 is a wasteful number, since it uses less digits than its factorization.

2120497357440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 623680 (or 623668 counting only the distinct ones).

The product of its (nonzero) digits is 1693440, while the sum is 48.

The spelling of 2120497357440 in words is "two trillion, one hundred twenty billion, four hundred ninety-seven million, three hundred fifty-seven thousand, four hundred forty".