66452077417 has 16 divisors (see below), whose sum is σ = 73891127232. Its totient is φ = 59253765120.

The previous prime is 66452077409. The next prime is 66452077429. The reversal of 66452077417 is 71477025466.

It is not a de Polignac number, because 66452077417 - 2³ = 66452077409 is a prime.

It is a super-2 number, since 2×66452077417² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66452077717) 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, 21768 + ... + 365209.

It is an arithmetic number, because the mean of its divisors is an integer number (4618195452).

Almost surely, 2^66452077417 is an apocalyptic number.

66452077417 is a gapful number since it is divisible by the number (67) formed by its first and last digit.

It is an amenable number.

66452077417 is a deficient number, since it is larger than the sum of its proper divisors (7439049815).

66452077417 is a wasteful number, since it uses less digits than its factorization.

66452077417 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 387288.

The product of its (nonzero) digits is 1975680, while the sum is 49.

The spelling of 66452077417 in words is "sixty-six billion, four hundred fifty-two million, seventy-seven thousand, four hundred seventeen".