91249103342401 has 4 divisors (see below), whose sum is σ = 91249215321904. Its totient is φ = 91248991362900.

The previous prime is 91249103342381. The next prime is 91249103342443. The reversal of 91249103342401 is 10424330194219.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 91249103342401 - 2⁹ = 91249103341889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91249103342101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54758415 + ... + 56400196.

It is an arithmetic number, because the mean of its divisors is an integer number (22812303830476).

Almost surely, 2^{91249103342401} is an apocalyptic number.

It is an amenable number.

91249103342401 is a deficient number, since it is larger than the sum of its proper divisors (111979503).

91249103342401 is a wasteful number, since it uses less digits than its factorization.

91249103342401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111979502.

The product of its (nonzero) digits is 186624, while the sum is 43.

The spelling of 91249103342401 in words is "ninety-one trillion, two hundred forty-nine billion, one hundred three million, three hundred forty-two thousand, four hundred one".