191010201000 has 64 divisors (see below), whose sum is σ = 595951836480. Its totient is φ = 50936052800.

The previous prime is 191010200989. The next prime is 191010201017. The reversal of 191010201000 is 102010191.

It is a Harshad number since it is a multiple of its sum of digits (15).

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, 31832034 + ... + 31838033.

It is an arithmetic number, because the mean of its divisors is an integer number (9311747445).

Almost surely, 2^191010201000 is an apocalyptic number.

191010201000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

191010201000 is an abundant number, since it is smaller than the sum of its proper divisors (404941635480).

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

191010201000 is a wasteful number, since it uses less digits than its factorization.

191010201000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63670091 (or 63670077 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 15.

Adding to 191010201000 its reverse (102010191), we get a palindrome (191112211191).

The spelling of 191010201000 in words is "one hundred ninety-one billion, ten million, two hundred one thousand".