2620404544542 has 32 divisors (see below), whose sum is σ = 5456058717600. Its totient is φ = 837976933248.

The previous prime is 2620404544529. The next prime is 2620404544547. The reversal of 2620404544542 is 2454454040262.

It is a junction number, because it is equal to n+sod(n) for n = 2620404544494 and 2620404544503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2620404544547) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47933817 + ... + 47988452.

It is an arithmetic number, because the mean of its divisors is an integer number (170501834925).

Almost surely, 2^{2620404544542} is an apocalyptic number.

2620404544542 is an abundant number, since it is smaller than the sum of its proper divisors (2835654173058).

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

2620404544542 is a wasteful number, since it uses less digits than its factorization.

2620404544542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95922460.

The product of its (nonzero) digits is 1228800, while the sum is 42.

The spelling of 2620404544542 in words is "two trillion, six hundred twenty billion, four hundred four million, five hundred forty-four thousand, five hundred forty-two".