65081056731 has 8 divisors (see below), whose sum is σ = 86778768144. Its totient is φ = 43385358240.

The previous prime is 65081056717. The next prime is 65081056739. The reversal of 65081056731 is 13765018056.

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

It is not a de Polignac number, because 65081056731 - 2⁹ = 65081056219 is a prime.

It is a super-2 number, since 2×65081056731² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (65081056739) 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, 426100 + ... + 558321.

It is an arithmetic number, because the mean of its divisors is an integer number (10847346018).

Almost surely, 2^65081056731 is an apocalyptic number.

65081056731 is a deficient number, since it is larger than the sum of its proper divisors (21697711413).

65081056731 is a wasteful number, since it uses less digits than its factorization.

65081056731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1006461.

The product of its (nonzero) digits is 151200, while the sum is 42.

The spelling of 65081056731 in words is "sixty-five billion, eighty-one million, fifty-six thousand, seven hundred thirty-one".