1071917971650 has 72 divisors (see below), whose sum is σ = 3031459270320. Its totient is φ = 270800327520.

The previous prime is 1071917971643. The next prime is 1071917971673. The reversal of 1071917971650 is 561797191701.

It is a super-2 number, since 2×1071917971650² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 62676712 + ... + 62693811.

Almost surely, 2^{1071917971650} is an apocalyptic number.

1071917971650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1071917971650 is an abundant number, since it is smaller than the sum of its proper divisors (1959541298670).

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

1071917971650 is a wasteful number, since it uses less digits than its factorization.

1071917971650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125370560 (or 125370552 counting only the distinct ones).

The product of its (nonzero) digits is 833490, while the sum is 54.

The spelling of 1071917971650 in words is "one trillion, seventy-one billion, nine hundred seventeen million, nine hundred seventy-one thousand, six hundred fifty".