1631204364042 has 160 divisors (see below), whose sum is σ = 4029653289024. Its totient is φ = 493159661280.

The previous prime is 1631204364037. The next prime is 1631204364091. The reversal of 1631204364042 is 2404634021361.

1631204364042 is a `hidden beast` number, since 1 + 6 + 3 + 1 + 2 + 0 + 4 + 3 + 640 + 4 + 2 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 1631204363988 and 1631204364006.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 95512008 + ... + 95529084.

Almost surely, 2^{1631204364042} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1631204364042, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2014826644512).

1631204364042 is an abundant number, since it is smaller than the sum of its proper divisors (2398448924982).

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

1631204364042 is a wasteful number, since it uses less digits than its factorization.

1631204364042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17567 (or 17536 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 36.

The spelling of 1631204364042 in words is "one trillion, six hundred thirty-one billion, two hundred four million, three hundred sixty-four thousand, forty-two".