70561520071 has 8 divisors (see below), whose sum is σ = 84147899904. Its totient is φ = 57851680920.

The previous prime is 70561520041. The next prime is 70561520089. The reversal of 70561520071 is 17002516507.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 70561520071 - 2⁹ = 70561519559 is a prime.

It is a super-2 number, since 2×70561520071² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70561520021) 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, 219134995 + ... + 219135316.

It is an arithmetic number, because the mean of its divisors is an integer number (10518487488).

Almost surely, 2^70561520071 is an apocalyptic number.

70561520071 is a deficient number, since it is larger than the sum of its proper divisors (13586379833).

70561520071 is a wasteful number, since it uses less digits than its factorization.

70561520071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 438270341.

The product of its (nonzero) digits is 14700, while the sum is 34.

The spelling of 70561520071 in words is "seventy billion, five hundred sixty-one million, five hundred twenty thousand, seventy-one".