643032631454662 has 16 divisors (see below), whose sum is σ = 1011862907200800. Its totient is φ = 306057299087680.

The previous prime is 643032631454651. The next prime is 643032631454663. The reversal of 643032631454662 is 266454136230346.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (643032631454663) 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, 78075837487 + ... + 78075845722.

It is an arithmetic number, because the mean of its divisors is an integer number (63241431700050).

Almost surely, 2^{643032631454662} is an apocalyptic number.

643032631454662 is a deficient number, since it is larger than the sum of its proper divisors (368830275746138).

643032631454662 is a wasteful number, since it uses less digits than its factorization.

643032631454662 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156151683311.

The product of its (nonzero) digits is 44789760, while the sum is 55.

The spelling of 643032631454662 in words is "six hundred forty-three trillion, thirty-two billion, six hundred thirty-one million, four hundred fifty-four thousand, six hundred sixty-two".