157620046693 has 2 divisors, whose sum is σ = 157620046694. Its totient is φ = 157620046692.

The previous prime is 157620046691. The next prime is 157620046699. The reversal of 157620046693 is 396640026751.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 89737391844 + 67882654849 = 299562^2 + 260543^2 .

It is a cyclic number.

It is not a de Polignac number, because 157620046693 - 2¹ = 157620046691 is a prime.

Together with 157620046691, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (157620046691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78810023346 + 78810023347.

It is an arithmetic number, because the mean of its divisors is an integer number (78810023347).

Almost surely, 2^157620046693 is an apocalyptic number.

It is an amenable number.

157620046693 is a deficient number, since it is larger than the sum of its proper divisors (1).

157620046693 is an equidigital number, since it uses as much as digits as its factorization.

157620046693 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1632960, while the sum is 49.

The spelling of 157620046693 in words is "one hundred fifty-seven billion, six hundred twenty million, forty-six thousand, six hundred ninety-three".