67497879477 has 16 divisors (see below), whose sum is σ = 102934495872. Its totient is φ = 38539997760.

The previous prime is 67497879467. The next prime is 67497879503. The reversal of 67497879477 is 77497879476.

It is not a de Polignac number, because 67497879477 - 2⁶ = 67497879413 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 67497879399 and 67497879408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67497879467) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1231674 + ... + 1285307.

It is an arithmetic number, because the mean of its divisors is an integer number (6433405992).

Almost surely, 2^67497879477 is an apocalyptic number.

It is an amenable number.

67497879477 is a deficient number, since it is larger than the sum of its proper divisors (35436616395).

67497879477 is a wasteful number, since it uses less digits than its factorization.

67497879477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2518268.

The product of its digits is 1045529856, while the sum is 75.

Subtracting 67497879477 from its reverse (77497879476), we obtain a palindrome (9999999999).

The spelling of 67497879477 in words is "sixty-seven billion, four hundred ninety-seven million, eight hundred seventy-nine thousand, four hundred seventy-seven".