1662603340551 has 8 divisors (see below), whose sum is σ = 2347204716144. Its totient is φ = 1043202096000.

The previous prime is 1662603340547. The next prime is 1662603340553. The reversal of 1662603340551 is 1550433062661.

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

It is not a de Polignac number, because 1662603340551 - 2² = 1662603340547 is a prime.

It is a super-2 number, since 2×1662603340551² (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 (1662603340553) 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, 16300032700 + ... + 16300032801.

It is an arithmetic number, because the mean of its divisors is an integer number (293400589518).

Almost surely, 2^{1662603340551} is an apocalyptic number.

1662603340551 is a deficient number, since it is larger than the sum of its proper divisors (684601375593).

1662603340551 is a wasteful number, since it uses less digits than its factorization.

1662603340551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32600065521.

The product of its (nonzero) digits is 388800, while the sum is 42.

The spelling of 1662603340551 in words is "one trillion, six hundred sixty-two billion, six hundred three million, three hundred forty thousand, five hundred fifty-one".