42235651251 has 12 divisors (see below), whose sum is σ = 61566750960. Its totient is φ = 27898778160.

The previous prime is 42235651223. The next prime is 42235651321. The reversal of 42235651251 is 15215653224.

42235651251 is a `hidden beast` number, since 4 + 2 + 2 + 356 + 51 + 251 = 666.

It is not a de Polignac number, because 42235651251 - 2¹⁴ = 42235634867 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42235611251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21525855 + ... + 21527816.

It is an arithmetic number, because the mean of its divisors is an integer number (5130562580).

Almost surely, 2^42235651251 is an apocalyptic number.

42235651251 is a deficient number, since it is larger than the sum of its proper divisors (19331099709).

42235651251 is a wasteful number, since it uses less digits than its factorization.

42235651251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43053786 (or 43053783 counting only the distinct ones).

The product of its digits is 72000, while the sum is 36.

The spelling of 42235651251 in words is "forty-two billion, two hundred thirty-five million, six hundred fifty-one thousand, two hundred fifty-one".