70861728650 has 24 divisors (see below), whose sum is σ = 131814613920. Its totient is φ = 28342154160.

The previous prime is 70861728631. The next prime is 70861728667. The reversal of 70861728650 is 5682716807.

It is a Harshad number since it is a multiple of its sum of digits (50).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 561707 + ... + 676193.

It is an arithmetic number, because the mean of its divisors is an integer number (5492275580).

Almost surely, 2^70861728650 is an apocalyptic number.

70861728650 is a deficient number, since it is larger than the sum of its proper divisors (60952885270).

70861728650 is a wasteful number, since it uses less digits than its factorization.

70861728650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126878 (or 126873 counting only the distinct ones).

The product of its (nonzero) digits is 1128960, while the sum is 50.

The spelling of 70861728650 in words is "seventy billion, eight hundred sixty-one million, seven hundred twenty-eight thousand, six hundred fifty".