67157615380 has 12 divisors (see below), whose sum is σ = 141030992340. Its totient is φ = 26863046144.

The previous prime is 67157615377. The next prime is 67157615381. The reversal of 67157615380 is 8351675176.

It can be written as a sum of positive squares in 2 ways, for example, as 31168490116 + 35989125264 = 176546^2 + 189708^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67157615381) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1678940365 + ... + 1678940404.

It is an arithmetic number, because the mean of its divisors is an integer number (11752582695).

Almost surely, 2^67157615380 is an apocalyptic number.

It is an amenable number.

67157615380 is an abundant number, since it is smaller than the sum of its proper divisors (73873376960).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

67157615380 is a wasteful number, since it uses less digits than its factorization.

67157615380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3357880778 (or 3357880776 counting only the distinct ones).

The product of its (nonzero) digits is 1058400, while the sum is 49.

The spelling of 67157615380 in words is "sixty-seven billion, one hundred fifty-seven million, six hundred fifteen thousand, three hundred eighty".