678231249501 has 32 divisors (see below), whose sum is σ = 1031253310080. Its totient is φ = 392785035264.

The previous prime is 678231249497. The next prime is 678231249511. The reversal of 678231249501 is 105942132876.

It is not a de Polignac number, because 678231249501 - 2² = 678231249497 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (678231249511) 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, 8105986 + ... + 8189228.

It is an arithmetic number, because the mean of its divisors is an integer number (32226665940).

It is a 1-persistent number, because it is pandigital, but 2⋅678231249501 = 1356462499002 is not.

Almost surely, 2^678231249501 is an apocalyptic number.

It is an amenable number.

678231249501 is a deficient number, since it is larger than the sum of its proper divisors (353022060579).

678231249501 is a wasteful number, since it uses less digits than its factorization.

678231249501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95565.

The product of its (nonzero) digits is 725760, while the sum is 48.

The spelling of 678231249501 in words is "six hundred seventy-eight billion, two hundred thirty-one million, two hundred forty-nine thousand, five hundred one".