85461721037 has 16 divisors (see below), whose sum is σ = 112817308032. Its totient is φ = 62676280320.

The previous prime is 85461721027. The next prime is 85461721057. The reversal of 85461721037 is 73012716458.

It is a cyclic number.

It is not a de Polignac number, because 85461721037 - 2⁶ = 85461720973 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85461721027) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32642588 + ... + 32645205.

It is an arithmetic number, because the mean of its divisors is an integer number (7051081752).

Almost surely, 2^85461721037 is an apocalyptic number.

It is an amenable number.

85461721037 is a deficient number, since it is larger than the sum of its proper divisors (27355586995).

85461721037 is a wasteful number, since it uses less digits than its factorization.

85461721037 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65287828.

The product of its (nonzero) digits is 282240, while the sum is 44.

The spelling of 85461721037 in words is "eighty-five billion, four hundred sixty-one million, seven hundred twenty-one thousand, thirty-seven".