91722346154 has 16 divisors (see below), whose sum is σ = 141544133640. Its totient is φ = 44550570240.

The previous prime is 91722346153. The next prime is 91722346187. The reversal of 91722346154 is 45164322719.

It can be written as a sum of positive squares in 4 ways, for example, as 64197877129 + 27524469025 = 253373^2 + 165905^2 .

It is not an unprimeable number, because it can be changed into a prime (91722346153) 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, 2381249 + ... + 2419460.

Almost surely, 2^91722346154 is an apocalyptic number.

91722346154 is a deficient number, since it is larger than the sum of its proper divisors (49821787486).

91722346154 is a wasteful number, since it uses less digits than its factorization.

91722346154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4800985.

The product of its digits is 362880, while the sum is 44.

The spelling of 91722346154 in words is "ninety-one billion, seven hundred twenty-two million, three hundred forty-six thousand, one hundred fifty-four".