157760821444 has 6 divisors (see below), whose sum is σ = 276081437534. Its totient is φ = 78880410720.

The previous prime is 157760821403. The next prime is 157760821501. The reversal of 157760821444 is 444128067751.

It can be written as a sum of positive squares in only one way, i.e., 132960871044 + 24799950400 = 364638^2 + 157480^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19720102677 + ... + 19720102684.

Almost surely, 2^157760821444 is an apocalyptic number.

It is an amenable number.

157760821444 is a deficient number, since it is larger than the sum of its proper divisors (118320616090).

157760821444 is a wasteful number, since it uses less digits than its factorization.

157760821444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39440205365 (or 39440205363 counting only the distinct ones).

The product of its (nonzero) digits is 1505280, while the sum is 49.

The spelling of 157760821444 in words is "one hundred fifty-seven billion, seven hundred sixty million, eight hundred twenty-one thousand, four hundred forty-four".