1636242442654 has 8 divisors (see below), whose sum is σ = 2500672412520. Its totient is φ = 802684971816.

The previous prime is 1636242442651. The next prime is 1636242442657. The reversal of 1636242442654 is 4562442426361.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1636242442651) and next prime (1636242442657).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×1636242442654² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1636242442598 and 1636242442607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1636242442651) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7718124624 + ... + 7718124835.

It is an arithmetic number, because the mean of its divisors is an integer number (312584051565).

Almost surely, 2^{1636242442654} is an apocalyptic number.

1636242442654 is a deficient number, since it is larger than the sum of its proper divisors (864429969866).

1636242442654 is a wasteful number, since it uses less digits than its factorization.

1636242442654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15436249514.

The product of its digits is 6635520, while the sum is 49.

The spelling of 1636242442654 in words is "one trillion, six hundred thirty-six billion, two hundred forty-two million, four hundred forty-two thousand, six hundred fifty-four".