70518838837 has 4 divisors (see below), whose sum is σ = 71849383020. Its totient is φ = 69188294656.

The previous prime is 70518838829. The next prime is 70518838889. The reversal of 70518838837 is 73883881507.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 45676665841 + 24842172996 = 213721^2 + 157614^2 .

It is a cyclic number.

It is not a de Polignac number, because 70518838837 - 2³ = 70518838829 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 (70518838807) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 665272012 + ... + 665272117.

It is an arithmetic number, because the mean of its divisors is an integer number (17962345755).

Almost surely, 2^70518838837 is an apocalyptic number.

It is an amenable number.

70518838837 is a deficient number, since it is larger than the sum of its proper divisors (1330544183).

70518838837 is a wasteful number, since it uses less digits than its factorization.

70518838837 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1330544182.

The product of its (nonzero) digits is 9031680, while the sum is 58.

The spelling of 70518838837 in words is "seventy billion, five hundred eighteen million, eight hundred thirty-eight thousand, eight hundred thirty-seven".