18780009028435 has 4 divisors (see below), whose sum is σ = 22536010834128. Its totient is φ = 15024007222744.

The previous prime is 18780009028421. The next prime is 18780009028481. The reversal of 18780009028435 is 53482090008781.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18780009028435 is a prime.

It is a super-2 number, since 2×18780009028435² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1878000902839 + ... + 1878000902848.

It is an arithmetic number, because the mean of its divisors is an integer number (5634002708532).

Almost surely, 2^{18780009028435} is an apocalyptic number.

18780009028435 is a deficient number, since it is larger than the sum of its proper divisors (3756001805693).

18780009028435 is an equidigital number, since it uses as much as digits as its factorization.

18780009028435 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3756001805692.

The product of its (nonzero) digits is 3870720, while the sum is 55.

The spelling of 18780009028435 in words is "eighteen trillion, seven hundred eighty billion, nine million, twenty-eight thousand, four hundred thirty-five".