2177432352623 has 4 divisors (see below), whose sum is σ = 2375380748328. Its totient is φ = 1979483956920.

The previous prime is 2177432352617. The next prime is 2177432352637. The reversal of 2177432352623 is 3262532347712.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2177432352623 - 2¹⁶ = 2177432287087 is a prime.

It is a super-2 number, since 2×2177432352623² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2177432352023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 98974197836 + ... + 98974197857.

It is an arithmetic number, because the mean of its divisors is an integer number (593845187082).

Almost surely, 2^{2177432352623} is an apocalyptic number.

2177432352623 is a deficient number, since it is larger than the sum of its proper divisors (197948395705).

2177432352623 is a wasteful number, since it uses less digits than its factorization.

2177432352623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197948395704.

The product of its digits is 2540160, while the sum is 47.

The spelling of 2177432352623 in words is "two trillion, one hundred seventy-seven billion, four hundred thirty-two million, three hundred fifty-two thousand, six hundred twenty-three".