70724342172 has 24 divisors (see below), whose sum is σ = 180025598592. Its totient is φ = 21431618800.

The previous prime is 70724342099. The next prime is 70724342189. The reversal of 70724342172 is 27124342707.

It is a self number, because there is not a number n which added to its sum of digits gives 70724342172.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 267895104 + ... + 267895367.

It is an arithmetic number, because the mean of its divisors is an integer number (7501066608).

Almost surely, 2^70724342172 is an apocalyptic number.

It is an amenable number.

70724342172 is an abundant number, since it is smaller than the sum of its proper divisors (109301256420).

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

70724342172 is a wasteful number, since it uses less digits than its factorization.

70724342172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 535790489 (or 535790487 counting only the distinct ones).

The product of its (nonzero) digits is 131712, while the sum is 39.

Adding to 70724342172 its reverse (27124342707), we get a palindrome (97848684879).

The spelling of 70724342172 in words is "seventy billion, seven hundred twenty-four million, three hundred forty-two thousand, one hundred seventy-two".