42890655951 has 168 divisors, whose sum is σ = 77026962768. Its totient is φ = 23710579200.

The previous prime is 42890655949. The next prime is 42890656021. The reversal of 42890655951 is 15955609824.

42890655951 is a `hidden beast` number, since 4 + 2 + 89 + 0 + 6 + 559 + 5 + 1 = 666.

It is not a de Polignac number, because 42890655951 - 2¹ = 42890655949 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42890655911) by changing a digit.

It is a polite number, since it can be written in 167 ways as a sum of consecutive naturals, for example, 129578856 + ... + 129579186.

It is an arithmetic number, because the mean of its divisors is an integer number (458493826).

Almost surely, 2^42890655951 is an apocalyptic number.

42890655951 is a deficient number, since it is larger than the sum of its proper divisors (34136306817).

42890655951 is a wasteful number, since it uses less digits than its factorization.

42890655951 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 497 (or 471 counting only the distinct ones).

The product of its (nonzero) digits is 3888000, while the sum is 54.

The spelling of 42890655951 in words is "forty-two billion, eight hundred ninety million, six hundred fifty-five thousand, nine hundred fifty-one".