157293019723 has 12 divisors (see below), whose sum is σ = 183491871480. Its totient is φ = 134440639872.

The previous prime is 157293019721. The next prime is 157293019727. The reversal of 157293019723 is 327910392751.

It is a happy number.

It is not a de Polignac number, because 157293019723 - 2¹ = 157293019721 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (157293019721) by changing a digit.

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 in 11 ways as a sum of consecutive naturals, for example, 4529533 + ... + 4564126.

It is an arithmetic number, because the mean of its divisors is an integer number (15290989290).

Almost surely, 2^157293019723 is an apocalyptic number.

157293019723 is a deficient number, since it is larger than the sum of its proper divisors (26198851757).

157293019723 is an equidigital number, since it uses as much as digits as its factorization.

157293019723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9094026 (or 9094019 counting only the distinct ones).

The product of its (nonzero) digits is 714420, while the sum is 49.

The spelling of 157293019723 in words is "one hundred fifty-seven billion, two hundred ninety-three million, nineteen thousand, seven hundred twenty-three".