42731431766401 has 12 divisors (see below), whose sum is σ = 49731855827952. Its totient is φ = 36609357681288.

The previous prime is 42731431766333. The next prime is 42731431766449. The reversal of 42731431766401 is 10466713413724.

It is not a de Polignac number, because 42731431766401 - 2²⁹ = 42730894895489 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42731431766501) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 209228235 + ... + 209432368.

It is an arithmetic number, because the mean of its divisors is an integer number (4144321318996).

Almost surely, 2^{42731431766401} is an apocalyptic number.

It is an amenable number.

42731431766401 is a deficient number, since it is larger than the sum of its proper divisors (7000424061551).

42731431766401 is a wasteful number, since it uses less digits than its factorization.

42731431766401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 418662700 (or 418662693 counting only the distinct ones).

The product of its (nonzero) digits is 2032128, while the sum is 49.

The spelling of 42731431766401 in words is "forty-two trillion, seven hundred thirty-one billion, four hundred thirty-one million, seven hundred sixty-six thousand, four hundred one".