91677525553 has 8 divisors (see below), whose sum is σ = 92906023680. Its totient is φ = 90450728160.

The previous prime is 91677525539. The next prime is 91677525587. The reversal of 91677525553 is 35552577619.

It is a happy number.

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 91677525553 - 2⁹ = 91677525041 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 91677525494 and 91677525503.

It is not an unprimeable number, because it can be changed into a prime (91677525593) 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, 316468 + ... + 532453.

It is an arithmetic number, because the mean of its divisors is an integer number (11613252960).

Almost surely, 2^91677525553 is an apocalyptic number.

It is an amenable number.

91677525553 is a deficient number, since it is larger than the sum of its proper divisors (1228498127).

91677525553 is a wasteful number, since it uses less digits than its factorization.

91677525553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 850367.

The product of its digits is 9922500, while the sum is 55.

The spelling of 91677525553 in words is "ninety-one billion, six hundred seventy-seven million, five hundred twenty-five thousand, five hundred fifty-three".