70882721381 has 4 divisors (see below), whose sum is σ = 70978639200. Its totient is φ = 70786803564.

The previous prime is 70882721347. The next prime is 70882721387. The reversal of 70882721381 is 18312728807.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 18312728807 = 78173 ⋅234259.

It is a cyclic number.

It is not a de Polignac number, because 70882721381 - 2³⁰ = 69808979557 is a prime.

It is a super-2 number, since 2×70882721381² (a number of 23 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 (70882721387) 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, 47957801 + ... + 47959278.

It is an arithmetic number, because the mean of its divisors is an integer number (17744659800).

Almost surely, 2^70882721381 is an apocalyptic number.

It is an amenable number.

70882721381 is a deficient number, since it is larger than the sum of its proper divisors (95917819).

70882721381 is an equidigital number, since it uses as much as digits as its factorization.

70882721381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95917818.

The product of its (nonzero) digits is 301056, while the sum is 47.

The spelling of 70882721381 in words is "seventy billion, eight hundred eighty-two million, seven hundred twenty-one thousand, three hundred eighty-one".