84993357945668 has 6 divisors (see below), whose sum is σ = 148738376404926. Its totient is φ = 42496678972832.

The previous prime is 84993357945667. The next prime is 84993357945673. The reversal of 84993357945668 is 86654975339948.

It can be written as a sum of positive squares in only one way, i.e., 52783101979204 + 32210255966464 = 7265198^2 + 5675408^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 84993357945668.

It is not an unprimeable number, because it can be changed into a prime (84993357945667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10624169743205 + ... + 10624169743212.

It is an arithmetic number, because the mean of its divisors is an integer number (24789729400821).

Almost surely, 2^{84993357945668} is an apocalyptic number.

It is an amenable number.

84993357945668 is a deficient number, since it is larger than the sum of its proper divisors (63745018459258).

84993357945668 is a wasteful number, since it uses less digits than its factorization.

84993357945668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21248339486421 (or 21248339486419 counting only the distinct ones).

The product of its digits is 42326323200, while the sum is 86.

The spelling of 84993357945668 in words is "eighty-four trillion, nine hundred ninety-three billion, three hundred fifty-seven million, nine hundred forty-five thousand, six hundred sixty-eight".