42636970161940 has 96 divisors (see below), whose sum is σ = 111703413024000. Its totient is φ = 13280865131520.

The previous prime is 42636970161923. The next prime is 42636970161949. The reversal of 42636970161940 is 4916107963624.

It is a super-2 number, since 2×42636970161940² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42636970161949) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6551385 + ... + 11322304.

It is an arithmetic number, because the mean of its divisors is an integer number (1163577219000).

Almost surely, 2^{42636970161940} is an apocalyptic number.

It is an amenable number.

42636970161940 is an abundant number, since it is smaller than the sum of its proper divisors (69066442862060).

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

42636970161940 is a wasteful number, since it uses less digits than its factorization.

42636970161940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17875265 (or 17875263 counting only the distinct ones).

The product of its (nonzero) digits is 11757312, while the sum is 58.

The spelling of 42636970161940 in words is "forty-two trillion, six hundred thirty-six billion, nine hundred seventy million, one hundred sixty-one thousand, nine hundred forty".