71938436156 has 12 divisors (see below), whose sum is σ = 125896512168. Its totient is φ = 35968004112.

The previous prime is 71938436107. The next prime is 71938436159. The reversal of 71938436156 is 65163483917.

It is a hoax number, since the sum of its digits (53) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 71938436098 and 71938436107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71938436159) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 162926 + ... + 412821.

It is an arithmetic number, because the mean of its divisors is an integer number (10491376014).

Almost surely, 2^71938436156 is an apocalyptic number.

It is an amenable number.

71938436156 is a deficient number, since it is larger than the sum of its proper divisors (53958076012).

71938436156 is a wasteful number, since it uses less digits than its factorization.

71938436156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 606988 (or 606986 counting only the distinct ones).

The product of its digits is 3265920, while the sum is 53.

The spelling of 71938436156 in words is "seventy-one billion, nine hundred thirty-eight million, four hundred thirty-six thousand, one hundred fifty-six".