91690939126 has 16 divisors (see below), whose sum is σ = 141783541200. Its totient is φ = 44451047808.

The previous prime is 91690939117. The next prime is 91690939127. The reversal of 91690939126 is 62193909619.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91690939127) 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, 5313591 + ... + 5330818.

It is an arithmetic number, because the mean of its divisors is an integer number (8861471325).

Almost surely, 2^91690939126 is an apocalyptic number.

91690939126 is a deficient number, since it is larger than the sum of its proper divisors (50092602074).

91690939126 is a wasteful number, since it uses less digits than its factorization.

91690939126 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10644543.

The product of its (nonzero) digits is 1417176, while the sum is 55.

The spelling of 91690939126 in words is "ninety-one billion, six hundred ninety million, nine hundred thirty-nine thousand, one hundred twenty-six".