71554721103 has 12 divisors (see below), whose sum is σ = 103370655960. Its totient is φ = 47696761296.

The previous prime is 71554721093. The next prime is 71554721123. The reversal of 71554721103 is 30112745517.

71554721103 is a `hidden beast` number, since 7 + 1 + 5 + 547 + 2 + 1 + 103 = 666.

It is not a de Polignac number, because 71554721103 - 2⁶ = 71554721039 is a prime.

It is a super-2 number, since 2×71554721103² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71554721123) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 460708 + ... + 596121.

It is an arithmetic number, because the mean of its divisors is an integer number (8614221330).

Almost surely, 2^71554721103 is an apocalyptic number.

71554721103 is a deficient number, since it is larger than the sum of its proper divisors (31815934857).

71554721103 is a wasteful number, since it uses less digits than its factorization.

71554721103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1064358 (or 1064355 counting only the distinct ones).

The product of its (nonzero) digits is 29400, while the sum is 36.

The spelling of 71554721103 in words is "seventy-one billion, five hundred fifty-four million, seven hundred twenty-one thousand, one hundred three".