142769779884 has 18 divisors (see below), whose sum is σ = 360890277020. Its totient is φ = 47589926616.

The previous prime is 142769779871. The next prime is 142769779907. The reversal of 142769779884 is 488977967241.

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×142769779884² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1982913574 + ... + 1982913645.

Almost surely, 2^142769779884 is an apocalyptic number.

It is an amenable number.

142769779884 is an abundant number, since it is smaller than the sum of its proper divisors (218120497136).

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

142769779884 is a wasteful number, since it uses less digits than its factorization.

142769779884 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3965827229 (or 3965827224 counting only the distinct ones).

The product of its digits is 341397504, while the sum is 72.

The spelling of 142769779884 in words is "one hundred forty-two billion, seven hundred sixty-nine million, seven hundred seventy-nine thousand, eight hundred eighty-four".