191628326064 has 80 divisors (see below), whose sum is σ = 566308531712. Its totient is φ = 54697849344.

The previous prime is 191628326053. The next prime is 191628326081. The reversal of 191628326064 is 460623826191.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71037 + ... + 623139.

Almost surely, 2^191628326064 is an apocalyptic number.

191628326064 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

191628326064 is an abundant number, since it is smaller than the sum of its proper divisors (374680205648).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

191628326064 is a wasteful number, since it uses less digits than its factorization.

191628326064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 553154 (or 553148 counting only the distinct ones).

The product of its (nonzero) digits is 746496, while the sum is 48.

The spelling of 191628326064 in words is "one hundred ninety-one billion, six hundred twenty-eight million, three hundred twenty-six thousand, sixty-four".