996551447641 has 8 divisors (see below), whose sum is σ = 1000972193760. Its totient is φ = 992130970848.

The previous prime is 996551447603. The next prime is 996551447651. The reversal of 996551447641 is 146744155699.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 996551447641 - 2⁷ = 996551447513 is a prime.

It is a super-2 number, since 2×996551447641² (a number of 25 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 996551447641.

It is not an unprimeable number, because it can be changed into a prime (996551447651) 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, 12649350 + ... + 12727888.

It is an arithmetic number, because the mean of its divisors is an integer number (125121524220).

Almost surely, 2^996551447641 is an apocalyptic number.

It is an amenable number.

996551447641 is a deficient number, since it is larger than the sum of its proper divisors (4420746119).

996551447641 is a wasteful number, since it uses less digits than its factorization.

996551447641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134663.

The product of its digits is 32659200, while the sum is 61.

The spelling of 996551447641 in words is "nine hundred ninety-six billion, five hundred fifty-one million, four hundred forty-seven thousand, six hundred forty-one".