70161775631640 has 384 divisors, whose sum is σ = 284311021662720. Its totient is φ = 14578088140800.

The previous prime is 70161775631573. The next prime is 70161775631671. The reversal of 70161775631640 is 4613657716107.

70161775631640 is a `hidden beast` number, since 7 + 0 + 1 + 6 + 1 + 77 + 563 + 1 + 6 + 4 + 0 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 455279400 + ... + 455433480.

It is an arithmetic number, because the mean of its divisors is an integer number (740393285580).

Almost surely, 2^{70161775631640} is an apocalyptic number.

70161775631640 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 70161775631640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (142155510831360).

70161775631640 is an abundant number, since it is smaller than the sum of its proper divisors (214149246031080).

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

70161775631640 is a wasteful number, since it uses less digits than its factorization.

70161775631640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170543 (or 170536 counting only the distinct ones).

The product of its (nonzero) digits is 4445280, while the sum is 54.

The spelling of 70161775631640 in words is "seventy trillion, one hundred sixty-one billion, seven hundred seventy-five million, six hundred thirty-one thousand, six hundred forty".