2351543320540 has 24 divisors (see below), whose sum is σ = 4943614505760. Its totient is φ = 939593798208.

The previous prime is 2351543320519. The next prime is 2351543320549. The reversal of 2351543320540 is 450233451532.

It is a self number, because there is not a number n which added to its sum of digits gives 2351543320540.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2351543320549) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63951787 + ... + 63988546.

It is an arithmetic number, because the mean of its divisors is an integer number (205983937740).

Almost surely, 2^{2351543320540} is an apocalyptic number.

2351543320540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2351543320540 is an abundant number, since it is smaller than the sum of its proper divisors (2592071185220).

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

2351543320540 is a wasteful number, since it uses less digits than its factorization.

2351543320540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127941261 (or 127941259 counting only the distinct ones).

The product of its (nonzero) digits is 216000, while the sum is 37.

The spelling of 2351543320540 in words is "two trillion, three hundred fifty-one billion, five hundred forty-three million, three hundred twenty thousand, five hundred forty".