157620611243 has 4 divisors (see below), whose sum is σ = 157622768880. Its totient is φ = 157618453608.

The previous prime is 157620611233. The next prime is 157620611261. The reversal of 157620611243 is 342116026751.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 342116026751 = 3119 ⋅109687729.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-157620611243 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 157620611197 and 157620611206.

It is not an unprimeable number, because it can be changed into a prime (157620611233) 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, 965255 + ... + 1116672.

It is an arithmetic number, because the mean of its divisors is an integer number (39405692220).

Almost surely, 2^157620611243 is an apocalyptic number.

157620611243 is a deficient number, since it is larger than the sum of its proper divisors (2157637).

157620611243 is an equidigital number, since it uses as much as digits as its factorization.

157620611243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2157636.

The product of its (nonzero) digits is 60480, while the sum is 38.

Adding to 157620611243 its reverse (342116026751), we get a palindrome (499736637994).

The spelling of 157620611243 in words is "one hundred fifty-seven billion, six hundred twenty million, six hundred eleven thousand, two hundred forty-three".