68921507153 has 8 divisors (see below), whose sum is σ = 70179466560. Its totient is φ = 67667680080.

The previous prime is 68921507143. The next prime is 68921507203. The reversal of 68921507153 is 35170512986.

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 68921507153 - 2⁸ = 68921506897 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 68921507098 and 68921507107.

It is not an unprimeable number, because it can be changed into a prime (68921507143) 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, 999413 + ... + 1066146.

It is an arithmetic number, because the mean of its divisors is an integer number (8772433320).

Almost surely, 2^68921507153 is an apocalyptic number.

It is an amenable number.

68921507153 is a deficient number, since it is larger than the sum of its proper divisors (1257959407).

68921507153 is a wasteful number, since it uses less digits than its factorization.

68921507153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2066167.

The product of its (nonzero) digits is 453600, while the sum is 47.

The spelling of 68921507153 in words is "sixty-eight billion, nine hundred twenty-one million, five hundred seven thousand, one hundred fifty-three".