65147296977 has 90 divisors (see below), whose sum is σ = 114067372518. Its totient is φ = 36946046592.

The previous prime is 65147296939. The next prime is 65147297011. The reversal of 65147296977 is 77969274156.

65147296977 is a `hidden beast` number, since 6 + 5 + 1 + 472 + 96 + 9 + 77 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 18397938321 + 46749358656 = 135639^2 + 216216^2 .

It is not a de Polignac number, because 65147296977 - 2¹⁰ = 65147295953 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65147296927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 89 ways as a sum of consecutive naturals, for example, 208138173 + ... + 208138485.

Almost surely, 2^65147296977 is an apocalyptic number.

It is an amenable number.

65147296977 is a deficient number, since it is larger than the sum of its proper divisors (48920075541).

65147296977 is an equidigital number, since it uses as much as digits as its factorization.

65147296977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 797 (or 552 counting only the distinct ones).

The product of its digits is 40007520, while the sum is 63.

The spelling of 65147296977 in words is "sixty-five billion, one hundred forty-seven million, two hundred ninety-six thousand, nine hundred seventy-seven".