1669055639442 has 32 divisors (see below), whose sum is σ = 3340511622144. Its totient is φ = 555951958800.

The previous prime is 1669055639429. The next prime is 1669055639479. The reversal of 1669055639442 is 2449365509661.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61732467 + ... + 61759497.

It is an arithmetic number, because the mean of its divisors is an integer number (104390988192).

Almost surely, 2^{1669055639442} is an apocalyptic number.

1669055639442 is an abundant number, since it is smaller than the sum of its proper divisors (1671455982702).

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

1669055639442 is a wasteful number, since it uses less digits than its factorization.

1669055639442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34054.

The product of its (nonzero) digits is 41990400, while the sum is 60.

The spelling of 1669055639442 in words is "one trillion, six hundred sixty-nine billion, fifty-five million, six hundred thirty-nine thousand, four hundred forty-two".