84478960642 has 8 divisors (see below), whose sum is σ = 134172466956. Its totient is φ = 39754804992.

The previous prime is 84478960639. The next prime is 84478960663. The reversal of 84478960642 is 24606987448.

It can be written as a sum of positive squares in 2 ways, for example, as 84448941201 + 30019441 = 290601^2 + 5479^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1242337623 + ... + 1242337690.

Almost surely, 2^84478960642 is an apocalyptic number.

84478960642 is a deficient number, since it is larger than the sum of its proper divisors (49693506314).

84478960642 is a wasteful number, since it uses less digits than its factorization.

84478960642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2484675332.

The product of its (nonzero) digits is 18579456, while the sum is 58.

The spelling of 84478960642 in words is "eighty-four billion, four hundred seventy-eight million, nine hundred sixty thousand, six hundred forty-two".