661003223513007 has 8 divisors (see below), whose sum is σ = 888277297739776. Its totient is φ = 437198982480792.

The previous prime is 661003223512967. The next prime is 661003223513011. The reversal of 661003223513007 is 700315322300166.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 661003223513007 - 2¹⁸ = 661003223250863 is a prime.

It is a super-2 number, since 2×661003223513007² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (661003223513807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 867458298193 + ... + 867458298954.

It is an arithmetic number, because the mean of its divisors is an integer number (111034662217472).

Almost surely, 2^{661003223513007} is an apocalyptic number.

661003223513007 is a deficient number, since it is larger than the sum of its proper divisors (227274074226769).

661003223513007 is a wasteful number, since it uses less digits than its factorization.

661003223513007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1734916597277.

The product of its (nonzero) digits is 136080, while the sum is 39.

The spelling of 661003223513007 in words is "six hundred sixty-one trillion, three billion, two hundred twenty-three million, five hundred thirteen thousand, seven".