91553493952829 has 2 divisors, whose sum is σ = 91553493952830. Its totient is φ = 91553493952828.

The previous prime is 91553493952819. The next prime is 91553493952927. The reversal of 91553493952829 is 92825939435519.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 76735883049604 + 14817610903225 = 8759902^2 + 3849365^2 .

It is an emirp because it is prime and its reverse (92825939435519) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 91553493952829 - 2⁴ = 91553493952813 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (91553493952819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45776746976414 + 45776746976415.

It is an arithmetic number, because the mean of its divisors is an integer number (45776746976415).

Almost surely, 2^{91553493952829} is an apocalyptic number.

It is an amenable number.

91553493952829 is a deficient number, since it is larger than the sum of its proper divisors (1).

91553493952829 is an equidigital number, since it uses as much as digits as its factorization.

91553493952829 is an evil number, because the sum of its binary digits is even.

The product of its digits is 944784000, while the sum is 74.

The spelling of 91553493952829 in words is "ninety-one trillion, five hundred fifty-three billion, four hundred ninety-three million, nine hundred fifty-two thousand, eight hundred twenty-nine".