91920020102 has 8 divisors (see below), whose sum is σ = 145990620216. Its totient is φ = 43256480032.

The previous prime is 91920020083. The next prime is 91920020149. The reversal of 91920020102 is 20102002919.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1351764968 + ... + 1351765035.

It is an arithmetic number, because the mean of its divisors is an integer number (18248827527).

Almost surely, 2^91920020102 is an apocalyptic number.

91920020102 is a deficient number, since it is larger than the sum of its proper divisors (54070600114).

91920020102 is a wasteful number, since it uses less digits than its factorization.

91920020102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2703530022.

The product of its (nonzero) digits is 648, while the sum is 26.

The spelling of 91920020102 in words is "ninety-one billion, nine hundred twenty million, twenty thousand, one hundred two".