40017506420672 has 28 divisors (see below), whose sum is σ = 86628806514456. Its totient is φ = 18189775645440.

The previous prime is 40017506420597. The next prime is 40017506420699. The reversal of 40017506420672 is 27602460571004.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28421523743 + ... + 28421525150.

Almost surely, 2^{40017506420672} is an apocalyptic number.

It is an amenable number.

40017506420672 is an abundant number, since it is smaller than the sum of its proper divisors (46611300093784).

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

40017506420672 is a wasteful number, since it uses less digits than its factorization.

40017506420672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56843048916 (or 56843048906 counting only the distinct ones).

The product of its (nonzero) digits is 564480, while the sum is 44.

Adding to 40017506420672 its reverse (27602460571004), we get a palindrome (67619966991676).

The spelling of 40017506420672 in words is "forty trillion, seventeen billion, five hundred six million, four hundred twenty thousand, six hundred seventy-two".