42783677638725 has 96 divisors (see below), whose sum is σ = 75678758749440. Its totient is φ = 21251949834240.

The previous prime is 42783677638697. The next prime is 42783677638727. The reversal of 42783677638725 is 52783677638724.

It is not a de Polignac number, because 42783677638725 - 2¹⁵ = 42783677605957 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (75).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42783677638727) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 110569944 + ... + 110956206.

It is an arithmetic number, because the mean of its divisors is an integer number (788320403640).

Almost surely, 2^{42783677638725} is an apocalyptic number.

It is an amenable number.

42783677638725 is a deficient number, since it is larger than the sum of its proper divisors (32895081110715).

42783677638725 is a wasteful number, since it uses less digits than its factorization.

42783677638725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 387199 (or 387194 counting only the distinct ones).

The product of its digits is 3982970880, while the sum is 75.

Subtracting 42783677638725 from its reverse (52783677638724), we obtain a palindrome (9999999999999).

The spelling of 42783677638725 in words is "forty-two trillion, seven hundred eighty-three billion, six hundred seventy-seven million, six hundred thirty-eight thousand, seven hundred twenty-five".