71956655770 has 16 divisors (see below), whose sum is σ = 130732468128. Its totient is φ = 28513665040.

The previous prime is 71956655747. The next prime is 71956655777. The reversal of 71956655770 is 7755665917.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (71956655777) 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, 33623536 + ... + 33625675.

It is an arithmetic number, because the mean of its divisors is an integer number (8170779258).

Almost surely, 2^71956655770 is an apocalyptic number.

71956655770 is a deficient number, since it is larger than the sum of its proper divisors (58775812358).

71956655770 is a wasteful number, since it uses less digits than its factorization.

71956655770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67249325.

The product of its (nonzero) digits is 13891500, while the sum is 58.

The spelling of 71956655770 in words is "seventy-one billion, nine hundred fifty-six million, six hundred fifty-five thousand, seven hundred seventy".