1636640146122 has 16 divisors (see below), whose sum is σ = 3307025451072. Its totient is φ = 539922522240.

The previous prime is 1636640146111. The next prime is 1636640146123. The reversal of 1636640146122 is 2216410466361.

It is not an unprimeable number, because it can be changed into a prime (1636640146123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1406047654 + ... + 1406048817.

It is an arithmetic number, because the mean of its divisors is an integer number (206689090692).

Almost surely, 2^{1636640146122} is an apocalyptic number.

1636640146122 is an abundant number, since it is smaller than the sum of its proper divisors (1670385304950).

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

1636640146122 is a wasteful number, since it uses less digits than its factorization.

1636640146122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2812096573.

The product of its (nonzero) digits is 248832, while the sum is 42.

The spelling of 1636640146122 in words is "one trillion, six hundred thirty-six billion, six hundred forty million, one hundred forty-six thousand, one hundred twenty-two".