157543123690 has 64 divisors (see below), whose sum is σ = 313528444416. Its totient is φ = 56692703232.

The previous prime is 157543123681. The next prime is 157543123691. The reversal of 157543123690 is 96321345751.

157543123690 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×157543123690² (a number of 23 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (46) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is a self number, because there is not a number n which added to its sum of digits gives 157543123690.

It is not an unprimeable number, because it can be changed into a prime (157543123691) 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 in 31 ways as a sum of consecutive naturals, for example, 6020074 + ... + 6046186.

It is an arithmetic number, because the mean of its divisors is an integer number (4898881944).

Almost surely, 2^157543123690 is an apocalyptic number.

157543123690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

157543123690 is a deficient number, since it is larger than the sum of its proper divisors (155985320726).

157543123690 is a wasteful number, since it uses less digits than its factorization.

157543123690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27703.

The product of its (nonzero) digits is 680400, while the sum is 46.

The spelling of 157543123690 in words is "one hundred fifty-seven billion, five hundred forty-three million, one hundred twenty-three thousand, six hundred ninety".