65772196078431 has 8 divisors (see below), whose sum is σ = 87696435633840. Its totient is φ = 43848043620992.

The previous prime is 65772196078429. The next prime is 65772196078471. The reversal of 65772196078431 is 13487069127756.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 65772196078431 - 2¹ = 65772196078429 is a prime.

It is a super-2 number, since 2×65772196078431² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65772196078471) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19991616 + ... + 23047973.

It is an arithmetic number, because the mean of its divisors is an integer number (10962054454230).

It is a 1-persistent number, because it is pandigital, but 2⋅65772196078431 = 131544392156862 is not.

Almost surely, 2^{65772196078431} is an apocalyptic number.

65772196078431 is a deficient number, since it is larger than the sum of its proper divisors (21924239555409).

65772196078431 is a wasteful number, since it uses less digits than its factorization.

65772196078431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43548985.

The product of its (nonzero) digits is 106686720, while the sum is 66.

The spelling of 65772196078431 in words is "sixty-five trillion, seven hundred seventy-two billion, one hundred ninety-six million, seventy-eight thousand, four hundred thirty-one".