70839370581 has 16 divisors (see below), whose sum is σ = 108016633344. Its totient is φ = 40453043184.

The previous prime is 70839370579. The next prime is 70839370669. The reversal of 70839370581 is 18507393807.

It is not a de Polignac number, because 70839370581 - 2¹ = 70839370579 is a prime.

It is a super-2 number, since 2×70839370581² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70839370981) 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, 1075471 + ... + 1139436.

It is an arithmetic number, because the mean of its divisors is an integer number (6751039584).

Almost surely, 2^70839370581 is an apocalyptic number.

It is an amenable number.

70839370581 is a deficient number, since it is larger than the sum of its proper divisors (37177262763).

70839370581 is a wasteful number, since it uses less digits than its factorization.

70839370581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2216440.

The product of its (nonzero) digits is 1270080, while the sum is 51.

The spelling of 70839370581 in words is "seventy billion, eight hundred thirty-nine million, three hundred seventy thousand, five hundred eighty-one".