42011909901983 has 48 divisors (see below), whose sum is σ = 49641842165760. Its totient is φ = 35443956038400.

The previous prime is 42011909901979. The next prime is 42011909901989. The reversal of 42011909901983 is 38910990911024.

It is not a de Polignac number, because 42011909901983 - 2² = 42011909901979 is a prime.

It is a super-2 number, since 2×42011909901983² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42011909901989) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 8978820038 + ... + 8978824716.

It is an arithmetic number, because the mean of its divisors is an integer number (1034205045120).

Almost surely, 2^{42011909901983} is an apocalyptic number.

42011909901983 is a deficient number, since it is larger than the sum of its proper divisors (7629932263777).

42011909901983 is a wasteful number, since it uses less digits than its factorization.

42011909901983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8508 (or 8501 counting only the distinct ones).

The product of its (nonzero) digits is 1259712, while the sum is 56.

The spelling of 42011909901983 in words is "forty-two trillion, eleven billion, nine hundred nine million, nine hundred one thousand, nine hundred eighty-three".