91480297556 has 6 divisors (see below), whose sum is σ = 160090520730. Its totient is φ = 45740148776.

The previous prime is 91480297499. The next prime is 91480297567. The reversal of 91480297556 is 65579208419.

It can be written as a sum of positive squares in only one way, i.e., 73083715600 + 18396581956 = 270340^2 + 135634^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11435037191 + ... + 11435037198.

It is an arithmetic number, because the mean of its divisors is an integer number (26681753455).

Almost surely, 2^91480297556 is an apocalyptic number.

It is an amenable number.

91480297556 is a deficient number, since it is larger than the sum of its proper divisors (68610223174).

91480297556 is a wasteful number, since it uses less digits than its factorization.

91480297556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22870074393 (or 22870074391 counting only the distinct ones).

The product of its (nonzero) digits is 5443200, while the sum is 56.

The spelling of 91480297556 in words is "ninety-one billion, four hundred eighty million, two hundred ninety-seven thousand, five hundred fifty-six".