1613631224042 has 4 divisors (see below), whose sum is σ = 2420446836066. Its totient is φ = 806815612020.

The previous prime is 1613631224041. The next prime is 1613631224089. The reversal of 1613631224042 is 2404221363161.

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., 1128185989921 + 485445234121 = 1062161^2 + 696739^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1613631223993 and 1613631224011.

It is not an unprimeable number, because it can be changed into a prime (1613631224041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 403407806009 + ... + 403407806012.

Almost surely, 2^{1613631224042} is an apocalyptic number.

1613631224042 is a deficient number, since it is larger than the sum of its proper divisors (806815612024).

1613631224042 is an equidigital number, since it uses as much as digits as its factorization.

1613631224042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 806815612023.

The product of its (nonzero) digits is 41472, while the sum is 35.

The spelling of 1613631224042 in words is "one trillion, six hundred thirteen billion, six hundred thirty-one million, two hundred twenty-four thousand, forty-two".