721765012050111 has 8 divisors (see below), whose sum is σ = 966914265748864. Its totient is φ = 478896216525720.

The previous prime is 721765012050101. The next prime is 721765012050179. The reversal of 721765012050111 is 111050210567127.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-721765012050111 is a prime.

It is a super-2 number, since 2×721765012050111² (a number of 31 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 721765012050111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (721765012050101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 570114542851 + ... + 570114544116.

It is an arithmetic number, because the mean of its divisors is an integer number (120864283218608).

Almost surely, 2^{721765012050111} is an apocalyptic number.

721765012050111 is a deficient number, since it is larger than the sum of its proper divisors (245149253698753).

721765012050111 is a wasteful number, since it uses less digits than its factorization.

721765012050111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1140229087181.

The product of its (nonzero) digits is 29400, while the sum is 39.

The spelling of 721765012050111 in words is "seven hundred twenty-one trillion, seven hundred sixty-five billion, twelve million, fifty thousand, one hundred eleven".