70251212556 has 144 divisors (see below), whose sum is σ = 215688432960. Its totient is φ = 18820546560.

The previous prime is 70251212513. The next prime is 70251212593. The reversal of 70251212556 is 65521215207.

70251212556 is a `hidden beast` number, since 70 + 2 + 512 + 1 + 25 + 56 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 70251212556.

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 in 47 ways as a sum of consecutive naturals, for example, 1121916 + ... + 1182876.

It is an arithmetic number, because the mean of its divisors is an integer number (1497836340).

Almost surely, 2^70251212556 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 70251212556, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (107844216480).

70251212556 is an abundant number, since it is smaller than the sum of its proper divisors (145437220404).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

70251212556 is a wasteful number, since it uses less digits than its factorization.

70251212556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61264 (or 61259 counting only the distinct ones).

The product of its (nonzero) digits is 42000, while the sum is 36.

The spelling of 70251212556 in words is "seventy billion, two hundred fifty-one million, two hundred twelve thousand, five hundred fifty-six".