157275780618 has 64 divisors (see below), whose sum is σ = 356920971264. Its totient is φ = 45769776000.

The previous prime is 157275780617. The next prime is 157275780631. The reversal of 157275780618 is 816087572751.

It is a happy number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (157275780617) 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, 25371 + ... + 561422.

It is an arithmetic number, because the mean of its divisors is an integer number (5576890176).

Almost surely, 2^157275780618 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 157275780618, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (178460485632).

157275780618 is an abundant number, since it is smaller than the sum of its proper divisors (199645190646).

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

157275780618 is a wasteful number, since it uses less digits than its factorization.

157275780618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 586971.

The product of its (nonzero) digits is 6585600, while the sum is 57.

The spelling of 157275780618 in words is "one hundred fifty-seven billion, two hundred seventy-five million, seven hundred eighty thousand, six hundred eighteen".