42357038649 has 16 divisors (see below), whose sum is σ = 56761931520. Its totient is φ = 28095172560.

The previous prime is 42357038641. The next prime is 42357038651. The reversal of 42357038649 is 94683075324.

It is not a de Polignac number, because 42357038649 - 2³ = 42357038641 is a prime.

It is a super-2 number, since 2×42357038649² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (42357038641) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2383254 + ... + 2400960.

It is an arithmetic number, because the mean of its divisors is an integer number (3547620720).

Almost surely, 2^42357038649 is an apocalyptic number.

It is an amenable number.

42357038649 is a deficient number, since it is larger than the sum of its proper divisors (14404892871).

42357038649 is a wasteful number, since it uses less digits than its factorization.

42357038649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21700.

The product of its (nonzero) digits is 4354560, while the sum is 51.

The spelling of 42357038649 in words is "forty-two billion, three hundred fifty-seven million, thirty-eight thousand, six hundred forty-nine".