70819418561 has 8 divisors (see below), whose sum is σ = 74620658400. Its totient is φ = 67025568960.

The previous prime is 70819418557. The next prime is 70819418609. The reversal of 70819418561 is 16581491807.

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 70819418561 - 2² = 70819418557 is a prime.

It is a super-2 number, since 2×70819418561² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70849418561) 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, 1827875 + ... + 1866216.

It is an arithmetic number, because the mean of its divisors is an integer number (9327582300).

Almost surely, 2^70819418561 is an apocalyptic number.

It is an amenable number.

70819418561 is a deficient number, since it is larger than the sum of its proper divisors (3801239839).

70819418561 is a wasteful number, since it uses less digits than its factorization.

70819418561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3695119.

The product of its (nonzero) digits is 483840, while the sum is 50.

The spelling of 70819418561 in words is "seventy billion, eight hundred nineteen million, four hundred eighteen thousand, five hundred sixty-one".