70418163861981 has 24 divisors (see below), whose sum is σ = 114301947142656. Its totient is φ = 41450156652960.

The previous prime is 70418163861953. The next prime is 70418163862031. The reversal of 70418163861981 is 18916836181407.

70418163861981 is a `hidden beast` number, since 7 + 0 + 4 + 1 + 8 + 1 + 6 + 3 + 8 + 619 + 8 + 1 = 666.

It is not a de Polignac number, because 70418163861981 - 2⁵ = 70418163861949 is a prime.

It is a super-2 number, since 2×70418163861981² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70418163869981) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13084011405 + ... + 13084016786.

It is an arithmetic number, because the mean of its divisors is an integer number (4762581130944).

Almost surely, 2^{70418163861981} is an apocalyptic number.

It is an amenable number.

70418163861981 is a deficient number, since it is larger than the sum of its proper divisors (43883783280675).

70418163861981 is a wasteful number, since it uses less digits than its factorization.

70418163861981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26168028233 (or 26168028230 counting only the distinct ones).

The product of its (nonzero) digits is 13934592, while the sum is 63.

The spelling of 70418163861981 in words is "seventy trillion, four hundred eighteen billion, one hundred sixty-three million, eight hundred sixty-one thousand, nine hundred eighty-one".