42272155961538 has 16 divisors (see below), whose sum is σ = 84563645227776. Its totient is φ = 14087496436400.

The previous prime is 42272155961537. The next prime is 42272155961569. The reversal of 42272155961538 is 83516955127224.

It is not an unprimeable number, because it can be changed into a prime (42272155961537) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 805525938 + ... + 805578413.

It is an arithmetic number, because the mean of its divisors is an integer number (5285227826736).

Almost surely, 2^{42272155961538} is an apocalyptic number.

42272155961538 is an abundant number, since it is smaller than the sum of its proper divisors (42291489266238).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42272155961538 is a wasteful number, since it uses less digits than its factorization.

42272155961538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1611108729.

The product of its digits is 36288000, while the sum is 60.

The spelling of 42272155961538 in words is "forty-two trillion, two hundred seventy-two billion, one hundred fifty-five million, nine hundred sixty-one thousand, five hundred thirty-eight".