661024047486 has 16 divisors (see below), whose sum is σ = 1442234285568. Its totient is φ = 200310317400.

The previous prime is 661024047461. The next prime is 661024047487. The reversal of 661024047486 is 684740420166.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (661024047487) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 5007757870 + ... + 5007758001.

It is an arithmetic number, because the mean of its divisors is an integer number (90139642848).

Almost surely, 2^661024047486 is an apocalyptic number.

661024047486 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

661024047486 is an abundant number, since it is smaller than the sum of its proper divisors (781210238082).

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

661024047486 is a wasteful number, since it uses less digits than its factorization.

661024047486 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10015515887.

The product of its (nonzero) digits is 1548288, while the sum is 48.

The spelling of 661024047486 in words is "six hundred sixty-one billion, twenty-four million, forty-seven thousand, four hundred eighty-six".