1001062661555 has 32 divisors (see below), whose sum is σ = 1417092019200. Its totient is φ = 670640197120.

The previous prime is 1001062661527. The next prime is 1001062661593. The reversal of 1001062661555 is 5551662601001.

It is a happy number.

It is not a de Polignac number, because 1001062661555 - 2⁶ = 1001062661491 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11346005 + ... + 11433894.

It is an arithmetic number, because the mean of its divisors is an integer number (44284125600).

Almost surely, 2^{1001062661555} is an apocalyptic number.

1001062661555 is a deficient number, since it is larger than the sum of its proper divisors (416029357645).

1001062661555 is a wasteful number, since it uses less digits than its factorization.

1001062661555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22779979.

The product of its (nonzero) digits is 54000, while the sum is 38.

The spelling of 1001062661555 in words is "one trillion, one billion, sixty-two million, six hundred sixty-one thousand, five hundred fifty-five".