3557618135378 has 4 divisors (see below), whose sum is σ = 5336427203070. Its totient is φ = 1778809067688.

The previous prime is 3557618135377. The next prime is 3557618135413. The reversal of 3557618135378 is 8735318167553.

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

It can be written as a sum of positive squares in only one way, i.e., 3542537558569 + 15080576809 = 1882163^2 + 122803^2 .

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 3557618135378.

It is not an unprimeable number, because it can be changed into a prime (3557618135377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 889404533843 + ... + 889404533846.

Almost surely, 2^{3557618135378} is an apocalyptic number.

3557618135378 is a deficient number, since it is larger than the sum of its proper divisors (1778809067692).

3557618135378 is a wasteful number, since it uses less digits than its factorization.

3557618135378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1778809067691.

The product of its digits is 63504000, while the sum is 62.

The spelling of 3557618135378 in words is "three trillion, five hundred fifty-seven billion, six hundred eighteen million, one hundred thirty-five thousand, three hundred seventy-eight".