1011010401644 has 48 divisors (see below), whose sum is σ = 1816642511040. Its totient is φ = 492028508160.

The previous prime is 1011010401631. The next prime is 1011010401673. The reversal of 1011010401644 is 4461040101101.

It is a super-3 number, since 3×1011010401644³ (a number of 37 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 151504292 + ... + 151510964.

It is an arithmetic number, because the mean of its divisors is an integer number (37846718980).

Almost surely, 2^{1011010401644} is an apocalyptic number.

It is an amenable number.

1011010401644 is a deficient number, since it is larger than the sum of its proper divisors (805632109396).

1011010401644 is a wasteful number, since it uses less digits than its factorization.

1011010401644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8730 (or 8728 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 23.

Adding to 1011010401644 its reverse (4461040101101), we get a palindrome (5472050502745).

The spelling of 1011010401644 in words is "one trillion, eleven billion, ten million, four hundred one thousand, six hundred forty-four".