91114146551 has 2 divisors, whose sum is σ = 91114146552. Its totient is φ = 91114146550.

The previous prime is 91114146547. The next prime is 91114146653. The reversal of 91114146551 is 15564141119.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 91114146551 - 2² = 91114146547 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (91114142551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45557073275 + 45557073276.

It is an arithmetic number, because the mean of its divisors is an integer number (45557073276).

Almost surely, 2^91114146551 is an apocalyptic number.

91114146551 is a deficient number, since it is larger than the sum of its proper divisors (1).

91114146551 is an equidigital number, since it uses as much as digits as its factorization.

91114146551 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21600, while the sum is 38.

The spelling of 91114146551 in words is "ninety-one billion, one hundred fourteen million, one hundred forty-six thousand, five hundred fifty-one".