1662657027550 has 48 divisors (see below), whose sum is σ = 3219558845760. Its totient is φ = 638039525760.

The previous prime is 1662657027541. The next prime is 1662657027557. The reversal of 1662657027550 is 557207562661.

It is a super-2 number, since 2×1662657027550² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1662657027557) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3424134 + ... + 3879433.

It is an arithmetic number, because the mean of its divisors is an integer number (67074142620).

Almost surely, 2^{1662657027550} is an apocalyptic number.

1662657027550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1662657027550 is a deficient number, since it is larger than the sum of its proper divisors (1556901818210).

1662657027550 is a wasteful number, since it uses less digits than its factorization.

1662657027550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7303765 (or 7303760 counting only the distinct ones).

The product of its (nonzero) digits is 5292000, while the sum is 52.

The spelling of 1662657027550 in words is "one trillion, six hundred sixty-two billion, six hundred fifty-seven million, twenty-seven thousand, five hundred fifty".