71538738699 has 16 divisors (see below), whose sum is σ = 96868617984. Its totient is φ = 46952623200.

The previous prime is 71538738673. The next prime is 71538738703. The reversal of 71538738699 is 99683783517.

It is not a de Polignac number, because 71538738699 - 2¹⁹ = 71538214411 is a prime.

It is a super-2 number, since 2×71538738699² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (71538738659) 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, 95844 + ... + 390209.

It is an arithmetic number, because the mean of its divisors is an integer number (6054288624).

Almost surely, 2^71538738699 is an apocalyptic number.

71538738699 is a deficient number, since it is larger than the sum of its proper divisors (25329879285).

71538738699 is a wasteful number, since it uses less digits than its factorization.

71538738699 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 486818.

The product of its digits is 68584320, while the sum is 66.

The spelling of 71538738699 in words is "seventy-one billion, five hundred thirty-eight million, seven hundred thirty-eight thousand, six hundred ninety-nine".