17977377453 has 16 divisors (see below), whose sum is σ = 27910970496. Its totient is φ = 10078960320.

The previous prime is 17977377449. The next prime is 17977377499. The reversal of 17977377453 is 35477377971.

It is a happy number.

It is not a de Polignac number, because 17977377453 - 2² = 17977377449 is a prime.

It is a super-2 number, since 2×17977377453² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (17977377403) 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, 8074978 + ... + 8077203.

It is an arithmetic number, because the mean of its divisors is an integer number (1744435656).

Almost surely, 2^17977377453 is an apocalyptic number.

It is an amenable number.

17977377453 is a deficient number, since it is larger than the sum of its proper divisors (9933593043).

17977377453 is a wasteful number, since it uses less digits than its factorization.

17977377453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16152244.

The product of its digits is 27227340, while the sum is 60.

The spelling of 17977377453 in words is "seventeen billion, nine hundred seventy-seven million, three hundred seventy-seven thousand, four hundred fifty-three".