633688412061 has 4 divisors (see below), whose sum is σ = 844917882752. Its totient is φ = 422458941372.

The previous prime is 633688412057. The next prime is 633688412081. The reversal of 633688412061 is 160214886336.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 633688412061 - 2² = 633688412057 is a prime.

It is a super-2 number, since 2×633688412061² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 633688412061.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (633688412081) 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, 105614735341 + ... + 105614735346.

It is an arithmetic number, because the mean of its divisors is an integer number (211229470688).

Almost surely, 2^633688412061 is an apocalyptic number.

It is an amenable number.

633688412061 is a deficient number, since it is larger than the sum of its proper divisors (211229470691).

633688412061 is a wasteful number, since it uses less digits than its factorization.

633688412061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211229470690.

The product of its (nonzero) digits is 995328, while the sum is 48.

The spelling of 633688412061 in words is "six hundred thirty-three billion, six hundred eighty-eight million, four hundred twelve thousand, sixty-one".