2780434355542 has 8 divisors (see below), whose sum is σ = 4177879700616. Its totient is φ = 1387807788672.

The previous prime is 2780434355527. The next prime is 2780434355597. The reversal of 2780434355542 is 2455534340872.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×2780434355542² (a number of 26 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2780434355542.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1204693108 + ... + 1204695415.

It is an arithmetic number, because the mean of its divisors is an integer number (522234962577).

Almost surely, 2^{2780434355542} is an apocalyptic number.

2780434355542 is a deficient number, since it is larger than the sum of its proper divisors (1397445345074).

2780434355542 is a wasteful number, since it uses less digits than its factorization.

2780434355542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2409389102.

The product of its (nonzero) digits is 16128000, while the sum is 52.

The spelling of 2780434355542 in words is "two trillion, seven hundred eighty billion, four hundred thirty-four million, three hundred fifty-five thousand, five hundred forty-two".