42526440611666 has 32 divisors (see below), whose sum is σ = 73733738158080. Its totient is φ = 18180398073600.

The previous prime is 42526440611653. The next prime is 42526440611671. The reversal of 42526440611666 is 66611604462524.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39251090 + ... + 40319981.

It is an arithmetic number, because the mean of its divisors is an integer number (2304179317440).

Almost surely, 2^{42526440611666} is an apocalyptic number.

42526440611666 is a deficient number, since it is larger than the sum of its proper divisors (31207297546414).

42526440611666 is a wasteful number, since it uses less digits than its factorization.

42526440611666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79572530.

The product of its (nonzero) digits is 9953280, while the sum is 53.

The spelling of 42526440611666 in words is "forty-two trillion, five hundred twenty-six billion, four hundred forty million, six hundred eleven thousand, six hundred sixty-six".