71294188953 has 16 divisors (see below), whose sum is σ = 102408808320. Its totient is φ = 43857204864.

The previous prime is 71294188949. The next prime is 71294188993. The reversal of 71294188953 is 35988149217.

It is not a de Polignac number, because 71294188953 - 2² = 71294188949 is a prime.

It is a super-2 number, since 2×71294188953² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 71294188893 and 71294188902.

It is not an unprimeable number, because it can be changed into a prime (71294188943) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 228501 + ... + 441362.

It is an arithmetic number, because the mean of its divisors is an integer number (6400550520).

Almost surely, 2^71294188953 is an apocalyptic number.

It is an amenable number.

71294188953 is a deficient number, since it is larger than the sum of its proper divisors (31114619367).

71294188953 is a wasteful number, since it uses less digits than its factorization.

71294188953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 672608.

The product of its digits is 4354560, while the sum is 57.

The spelling of 71294188953 in words is "seventy-one billion, two hundred ninety-four million, one hundred eighty-eight thousand, nine hundred fifty-three".