70643216457 has 96 divisors (see below), whose sum is σ = 120994473600. Its totient is φ = 39231682560.

The previous prime is 70643216431. The next prime is 70643216461. The reversal of 70643216457 is 75461234607.

70643216457 is a `hidden beast` number, since 7 + 0 + 6 + 432 + 164 + 57 = 666.

It is not a de Polignac number, because 70643216457 - 2²³ = 70634827849 is a prime.

It is not an unprimeable number, because it can be changed into a prime (70643216407) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 25255383 + ... + 25258179.

It is an arithmetic number, because the mean of its divisors is an integer number (1260359100).

Almost surely, 2^70643216457 is an apocalyptic number.

It is an amenable number.

70643216457 is a deficient number, since it is larger than the sum of its proper divisors (50351257143).

70643216457 is a wasteful number, since it uses less digits than its factorization.

70643216457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3223 (or 3220 counting only the distinct ones).

The product of its (nonzero) digits is 846720, while the sum is 45.

The spelling of 70643216457 in words is "seventy billion, six hundred forty-three million, two hundred sixteen thousand, four hundred fifty-seven".