172346077477 has 12 divisors (see below), whose sum is σ = 207879244896. Its totient is φ = 139950196200.

The previous prime is 172346077457. The next prime is 172346077523. The reversal of 172346077477 is 774770643271.

It is not a de Polignac number, because 172346077477 - 2⁷ = 172346077349 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172346077457) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 34098399 + ... + 34103452.

It is an arithmetic number, because the mean of its divisors is an integer number (17323270408).

Almost surely, 2^172346077477 is an apocalyptic number.

It is an amenable number.

172346077477 is a deficient number, since it is larger than the sum of its proper divisors (35533167419).

172346077477 is an equidigital number, since it uses as much as digits as its factorization.

172346077477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68201896 (or 68201877 counting only the distinct ones).

The product of its (nonzero) digits is 9680832, while the sum is 55.

The spelling of 172346077477 in words is "one hundred seventy-two billion, three hundred forty-six million, seventy-seven thousand, four hundred seventy-seven".