66637150042 has 8 divisors (see below), whose sum is σ = 99956898036. Its totient is φ = 33318184032.

The previous prime is 66637150033. The next prime is 66637150051. The reversal of 66637150042 is 24005173666.

It is an interprime number because it is at equal distance from previous prime (66637150033) and next prime (66637150051).

It can be written as a sum of positive squares in 2 ways, for example, as 66573804361 + 63345681 = 258019^2 + 7959^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 66637149977 and 66637150004.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 118248 + ... + 383740.

Almost surely, 2^66637150042 is an apocalyptic number.

66637150042 is a deficient number, since it is larger than the sum of its proper divisors (33319747994).

66637150042 is a wasteful number, since it uses less digits than its factorization.

66637150042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 390992.

The product of its (nonzero) digits is 181440, while the sum is 40.

The spelling of 66637150042 in words is "sixty-six billion, six hundred thirty-seven million, one hundred fifty thousand, forty-two".