91351951354 has 4 divisors (see below), whose sum is σ = 137027927034. Its totient is φ = 45675975676.

The previous prime is 91351951331. The next prime is 91351951367. The reversal of 91351951354 is 45315915319.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 74340749025 + 17011202329 = 272655^2 + 130427^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22837987837 + ... + 22837987840.

Almost surely, 2^91351951354 is an apocalyptic number.

91351951354 is a deficient number, since it is larger than the sum of its proper divisors (45675975680).

91351951354 is a wasteful number, since it uses less digits than its factorization.

91351951354 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45675975679.

The product of its digits is 364500, while the sum is 46.

The spelling of 91351951354 in words is "ninety-one billion, three hundred fifty-one million, nine hundred fifty-one thousand, three hundred fifty-four".