91552370506 has 16 divisors (see below), whose sum is σ = 137479788648. Its totient is φ = 45725803200.

The previous prime is 91552370479. The next prime is 91552370509. The reversal of 91552370506 is 60507325519.

It can be written as a sum of positive squares in 4 ways, for example, as 91470558481 + 81812025 = 302441^2 + 9045^2 .

It is not an unprimeable number, because it can be changed into a prime (91552370509) 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, 9355336 + ... + 9365116.

Almost surely, 2^91552370506 is an apocalyptic number.

91552370506 is a deficient number, since it is larger than the sum of its proper divisors (45927418142).

91552370506 is a wasteful number, since it uses less digits than its factorization.

91552370506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14457.

The product of its (nonzero) digits is 283500, while the sum is 43.

The spelling of 91552370506 in words is "ninety-one billion, five hundred fifty-two million, three hundred seventy thousand, five hundred six".