68421277535 has 16 divisors (see below), whose sum is σ = 91273647360. Its totient is φ = 48896593920.

The previous prime is 68421277531. The next prime is 68421277541. The reversal of 68421277535 is 53577212486.

It is not a de Polignac number, because 68421277535 - 2² = 68421277531 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68421277531) 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, 16975970 + ... + 16979999.

It is an arithmetic number, because the mean of its divisors is an integer number (5704602960).

Almost surely, 2^68421277535 is an apocalyptic number.

68421277535 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

68421277535 is a deficient number, since it is larger than the sum of its proper divisors (22852369825).

68421277535 is a wasteful number, since it uses less digits than its factorization.

68421277535 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33956018.

The product of its digits is 2822400, while the sum is 50.

The spelling of 68421277535 in words is "sixty-eight billion, four hundred twenty-one million, two hundred seventy-seven thousand, five hundred thirty-five".