83894437657957 has 8 divisors (see below), whose sum is σ = 84556152160256. Its totient is φ = 83232740786832.

The previous prime is 83894437657937. The next prime is 83894437657981. The reversal of 83894437657957 is 75975673449838.

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 83894437657957 - 2¹¹ = 83894437655909 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83894437657937) 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, 5229103 + ... + 13968979.

It is an arithmetic number, because the mean of its divisors is an integer number (10569519020032).

Almost surely, 2^{83894437657957} is an apocalyptic number.

It is an amenable number.

83894437657957 is a deficient number, since it is larger than the sum of its proper divisors (661714502299).

83894437657957 is a wasteful number, since it uses less digits than its factorization.

83894437657957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8815587.

The product of its digits is 38407219200, while the sum is 85.

The spelling of 83894437657957 in words is "eighty-three trillion, eight hundred ninety-four billion, four hundred thirty-seven million, six hundred fifty-seven thousand, nine hundred fifty-seven".