66101542 has 16 divisors (see below), whose sum is σ = 113061312. Its totient is φ = 28713600.

The previous prime is 66101509. The next prime is 66101543. The reversal of 66101542 is 24510166.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66101543) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74334 + ... + 75217.

It is an arithmetic number, because the mean of its divisors is an integer number (7066332).

Almost surely, 2^66101542 is an apocalyptic number.

66101542 is a deficient number, since it is larger than the sum of its proper divisors (46959770).

66101542 is a wasteful number, since it uses less digits than its factorization.

66101542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149583.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 66101542 is about 8130.2854808426. The cubic root of 66101542 is about 404.3311461672.

The spelling of 66101542 in words is "sixty-six million, one hundred one thousand, five hundred forty-two".