1001601026690 has 128 divisors (see below), whose sum is σ = 2082684960000. Its totient is φ = 342989337600.

The previous prime is 1001601026689. The next prime is 1001601026717. The reversal of 1001601026690 is 966201061001.

It is a super-2 number, since 2×1001601026690² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 392937536 + ... + 392940084.

It is an arithmetic number, because the mean of its divisors is an integer number (16270976250).

Almost surely, 2^{1001601026690} is an apocalyptic number.

1001601026690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1001601026690 is an abundant number, since it is smaller than the sum of its proper divisors (1081083933310).

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

1001601026690 is a wasteful number, since it uses less digits than its factorization.

1001601026690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3636.

The product of its (nonzero) digits is 3888, while the sum is 32.

Adding to 1001601026690 its reverse (966201061001), we get a palindrome (1967802087691).

The spelling of 1001601026690 in words is "one trillion, one billion, six hundred one million, twenty-six thousand, six hundred ninety".