42020664644266 has 32 divisors (see below), whose sum is σ = 78589075512960. Its totient is φ = 16370650982400.

The previous prime is 42020664644237. The next prime is 42020664644279. The reversal of 42020664644266 is 66244646602024.

It is a super-3 number, since 3×42020664644266³ (a number of 42 digits) contains 333 as substring.

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, 6195355 + ... + 11064526.

It is an arithmetic number, because the mean of its divisors is an integer number (2455908609780).

Almost surely, 2^{42020664644266} is an apocalyptic number.

42020664644266 is a deficient number, since it is larger than the sum of its proper divisors (36568410868694).

42020664644266 is a wasteful number, since it uses less digits than its factorization.

42020664644266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17275710.

The product of its (nonzero) digits is 15925248, while the sum is 52.

The spelling of 42020664644266 in words is "forty-two trillion, twenty billion, six hundred sixty-four million, six hundred forty-four thousand, two hundred sixty-six".