157061796989 has 2 divisors, whose sum is σ = 157061796990. Its totient is φ = 157061796988.

The previous prime is 157061796959. The next prime is 157061797069. The reversal of 157061796989 is 989697160751.

157061796989 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 133176094489 + 23885702500 = 364933^2 + 154550^2 .

It is a cyclic number.

It is not a de Polignac number, because 157061796989 - 2¹² = 157061792893 is a prime.

It is a super-2 number, since 2×157061796989² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (157061796959) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78530898494 + 78530898495.

It is an arithmetic number, because the mean of its divisors is an integer number (78530898495).

Almost surely, 2^157061796989 is an apocalyptic number.

It is an amenable number.

157061796989 is a deficient number, since it is larger than the sum of its proper divisors (1).

157061796989 is an equidigital number, since it uses as much as digits as its factorization.

157061796989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 51438240, while the sum is 68.

The spelling of 157061796989 in words is "one hundred fifty-seven billion, sixty-one million, seven hundred ninety-six thousand, nine hundred eighty-nine".