71136549902 has 16 divisors (see below), whose sum is σ = 121466362752. Its totient is φ = 30928934520.

The previous prime is 71136549893. The next prime is 71136549907. The reversal of 71136549902 is 20994563117.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71136549907) 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, 70292528 + ... + 70293539.

It is an arithmetic number, because the mean of its divisors is an integer number (7591647672).

Almost surely, 2^71136549902 is an apocalyptic number.

71136549902 is a deficient number, since it is larger than the sum of its proper divisors (50329812850).

71136549902 is a wasteful number, since it uses less digits than its factorization.

71136549902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140586103.

The product of its (nonzero) digits is 408240, while the sum is 47.

The spelling of 71136549902 in words is "seventy-one billion, one hundred thirty-six million, five hundred forty-nine thousand, nine hundred two".