60705440721 has 24 divisors (see below), whose sum is σ = 88001020224. Its totient is φ = 40324848480.

The previous prime is 60705440717. The next prime is 60705440729. The reversal of 60705440721 is 12704450706.

60705440721 is a `hidden beast` number, since 607 + 0 + 5 + 4 + 40 + 7 + 2 + 1 = 666.

It is not a de Polignac number, because 60705440721 - 2² = 60705440717 is a prime.

It is not an unprimeable number, because it can be changed into a prime (60705440729) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10972726 + ... + 10978256.

It is an arithmetic number, because the mean of its divisors is an integer number (3666709176).

Almost surely, 2^60705440721 is an apocalyptic number.

It is an amenable number.

60705440721 is a deficient number, since it is larger than the sum of its proper divisors (27295579503).

60705440721 is a wasteful number, since it uses less digits than its factorization.

60705440721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9701 (or 9698 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 36.

The spelling of 60705440721 in words is "sixty billion, seven hundred five million, four hundred forty thousand, seven hundred twenty-one".