66162640142 has 16 divisors (see below), whose sum is σ = 104477346960. Its totient is φ = 31337191872.

The previous prime is 66162640129. The next prime is 66162640189. The reversal of 66162640142 is 24104626166.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a junction number, because it is equal to n+sod(n) for n = 66162640096 and 66162640105.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 346658 + ... + 502490.

It is an arithmetic number, because the mean of its divisors is an integer number (6529834185).

Almost surely, 2^66162640142 is an apocalyptic number.

66162640142 is a deficient number, since it is larger than the sum of its proper divisors (38314706818).

66162640142 is a wasteful number, since it uses less digits than its factorization.

66162640142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167027.

The product of its (nonzero) digits is 82944, while the sum is 38.

The spelling of 66162640142 in words is "sixty-six billion, one hundred sixty-two million, six hundred forty thousand, one hundred forty-two".