71945955142 has 16 divisors (see below), whose sum is σ = 115294386240. Its totient is φ = 33571010088.

The previous prime is 71945955131. The next prime is 71945955143. The reversal of 71945955142 is 24155954917.

It is a super-2 number, since 2×71945955142² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 71945955142.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71945955143) 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, 14126668 + ... + 14131759.

It is an arithmetic number, because the mean of its divisors is an integer number (7205899140).

Almost surely, 2^71945955142 is an apocalyptic number.

71945955142 is a deficient number, since it is larger than the sum of its proper divisors (43348431098).

71945955142 is a wasteful number, since it uses less digits than its factorization.

71945955142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28258515.

The product of its digits is 2268000, while the sum is 52.

The spelling of 71945955142 in words is "seventy-one billion, nine hundred forty-five million, nine hundred fifty-five thousand, one hundred forty-two".