68850340515451 has 32 divisors (see below), whose sum is σ = 76135525539840. Its totient is φ = 61741207756800.

The previous prime is 68850340515427. The next prime is 68850340515479. The reversal of 68850340515451 is 15451504305886.

It is not a de Polignac number, because 68850340515451 - 2⁵ = 68850340515419 is a prime.

It is a Smith number, since the sum of its digits (55) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 68850340515392 and 68850340515401.

It is not an unprimeable number, because it can be changed into a prime (68850340512451) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 499603366 + ... + 499741156.

It is an arithmetic number, because the mean of its divisors is an integer number (2379235173120).

Almost surely, 2^{68850340515451} is an apocalyptic number.

68850340515451 is a deficient number, since it is larger than the sum of its proper divisors (7285185024389).

68850340515451 is a wasteful number, since it uses less digits than its factorization.

68850340515451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139627.

The product of its (nonzero) digits is 11520000, while the sum is 55.

The spelling of 68850340515451 in words is "sixty-eight trillion, eight hundred fifty billion, three hundred forty million, five hundred fifteen thousand, four hundred fifty-one".