65151554121 has 24 divisors (see below), whose sum is σ = 96661267040. Its totient is φ = 43371255816.

The previous prime is 65151554071. The next prime is 65151554131. The reversal of 65151554121 is 12145515156.

65151554121 is a `hidden beast` number, since 6 + 51 + 51 + 554 + 1 + 2 + 1 = 666.

It is not a de Polignac number, because 65151554121 - 2⁶ = 65151554057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65151554131) 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 23 ways as a sum of consecutive naturals, for example, 21241230 + ... + 21244296.

Almost surely, 2^65151554121 is an apocalyptic number.

It is an amenable number.

65151554121 is a deficient number, since it is larger than the sum of its proper divisors (31509712919).

65151554121 is an frugal number, since it uses more digits than its factorization.

65151554121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4850 (or 3957 counting only the distinct ones).

The product of its digits is 30000, while the sum is 36.

The spelling of 65151554121 in words is "sixty-five billion, one hundred fifty-one million, five hundred fifty-four thousand, one hundred twenty-one".