84731570517081 has 32 divisors (see below), whose sum is σ = 114265972044288. Its totient is φ = 55846234967040.

The previous prime is 84731570517053. The next prime is 84731570517101. The reversal of 84731570517081 is 18071507513748.

It is not a de Polignac number, because 84731570517081 - 2⁶ = 84731570517017 is a prime.

It is a super-2 number, since 2×84731570517081² (a number of 29 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (84731970517081) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 110180341 + ... + 110946701.

It is an arithmetic number, because the mean of its divisors is an integer number (3570811626384).

Almost surely, 2^{84731570517081} is an apocalyptic number.

It is an amenable number.

84731570517081 is a deficient number, since it is larger than the sum of its proper divisors (29534401527207).

84731570517081 is a wasteful number, since it uses less digits than its factorization.

84731570517081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 767601.

The product of its (nonzero) digits is 6585600, while the sum is 57.

The spelling of 84731570517081 in words is "eighty-four trillion, seven hundred thirty-one billion, five hundred seventy million, five hundred seventeen thousand, eighty-one".