70861988408 has 8 divisors (see below), whose sum is σ = 132866228280. Its totient is φ = 35430994200.

The previous prime is 70861988387. The next prime is 70861988419. The reversal of 70861988408 is 80488916807.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×70861988408² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4428874268 + ... + 4428874283.

It is an arithmetic number, because the mean of its divisors is an integer number (16608278535).

Almost surely, 2^70861988408 is an apocalyptic number.

It is an amenable number.

70861988408 is a deficient number, since it is larger than the sum of its proper divisors (62004239872).

70861988408 is a wasteful number, since it uses less digits than its factorization.

70861988408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8857748557 (or 8857748553 counting only the distinct ones).

The product of its (nonzero) digits is 6193152, while the sum is 59.

The spelling of 70861988408 in words is "seventy billion, eight hundred sixty-one million, nine hundred eighty-eight thousand, four hundred eight".