153666489543 has 48 divisors (see below), whose sum is σ = 246708540000. Its totient is φ = 84729915648.

The previous prime is 153666489517. The next prime is 153666489547. The reversal of 153666489543 is 345984666351.

It is not a de Polignac number, because 153666489543 - 2⁵ = 153666489511 is a prime.

It is a super-2 number, since 2×153666489543² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (153666489547) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7616433 + ... + 7636581.

It is an arithmetic number, because the mean of its divisors is an integer number (5139761250).

Almost surely, 2^153666489543 is an apocalyptic number.

153666489543 is a deficient number, since it is larger than the sum of its proper divisors (93042050457).

153666489543 is a wasteful number, since it uses less digits than its factorization.

153666489543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21984 (or 21977 counting only the distinct ones).

The product of its digits is 55987200, while the sum is 60.

The spelling of 153666489543 in words is "one hundred fifty-three billion, six hundred sixty-six million, four hundred eighty-nine thousand, five hundred forty-three".