91529945553551 has 8 divisors (see below), whose sum is σ = 91622635632240. Its totient is φ = 91437259390848.

The previous prime is 91529945553511. The next prime is 91529945553691. The reversal of 91529945553551 is 15535554992519.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 91529945553551 - 2³⁴ = 91512765684367 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91529945553511) 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, 46979825 + ... + 48889301.

It is an arithmetic number, because the mean of its divisors is an integer number (11452829454030).

Almost surely, 2^{91529945553551} is an apocalyptic number.

91529945553551 is a deficient number, since it is larger than the sum of its proper divisors (92690078689).

91529945553551 is a wasteful number, since it uses less digits than its factorization.

91529945553551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1957993.

The product of its digits is 273375000, while the sum is 68.

The spelling of 91529945553551 in words is "ninety-one trillion, five hundred twenty-nine billion, nine hundred forty-five million, five hundred fifty-three thousand, five hundred fifty-one".