157398194443 has 16 divisors (see below), whose sum is σ = 189408087040. Its totient is φ = 127773676800.

The previous prime is 157398194431. The next prime is 157398194449. The reversal of 157398194443 is 344491893751.

It is a happy number.

It is not a de Polignac number, because 157398194443 - 2²⁵ = 157364640011 is a prime.

It is a super-2 number, since 2×157398194443² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (157398194449) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 270958 + ... + 623068.

It is an arithmetic number, because the mean of its divisors is an integer number (11838005440).

Almost surely, 2^157398194443 is an apocalyptic number.

157398194443 is a deficient number, since it is larger than the sum of its proper divisors (32009892597).

157398194443 is a wasteful number, since it uses less digits than its factorization.

157398194443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 355498.

The product of its digits is 13063680, while the sum is 58.

The spelling of 157398194443 in words is "one hundred fifty-seven billion, three hundred ninety-eight million, one hundred ninety-four thousand, four hundred forty-three".