70557452820 has 144 divisors (see below), whose sum is σ = 223477293312. Its totient is φ = 17985369600.

The previous prime is 70557452813. The next prime is 70557452827. The reversal of 70557452820 is 2825475507.

70557452820 is a `hidden beast` number, since 7 + 0 + 5 + 574 + 52 + 8 + 20 = 666.

It is an interprime number because it is at equal distance from previous prime (70557452813) and next prime (70557452827).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70557452827) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7451409 + ... + 7460871.

It is an arithmetic number, because the mean of its divisors is an integer number (1551925648).

Almost surely, 2^70557452820 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 70557452820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (111738646656).

70557452820 is an abundant number, since it is smaller than the sum of its proper divisors (152919840492).

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

70557452820 is a wasteful number, since it uses less digits than its factorization.

70557452820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11302 (or 11297 counting only the distinct ones).

The product of its (nonzero) digits is 784000, while the sum is 45.

The spelling of 70557452820 in words is "seventy billion, five hundred fifty-seven million, four hundred fifty-two thousand, eight hundred twenty".