157830061725511 has 4 divisors (see below), whose sum is σ = 180377213400592. Its totient is φ = 135282910050432.

The previous prime is 157830061725493. The next prime is 157830061725527. The reversal of 157830061725511 is 115527160038751.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 157830061725511 - 2¹⁹ = 157830061201223 is a prime.

It is a super-2 number, since 2×157830061725511² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157830061125511) 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, 11273575837530 + ... + 11273575837543.

It is an arithmetic number, because the mean of its divisors is an integer number (45094303350148).

Almost surely, 2^{157830061725511} is an apocalyptic number.

157830061725511 is a deficient number, since it is larger than the sum of its proper divisors (22547151675081).

157830061725511 is an equidigital number, since it uses as much as digits as its factorization.

157830061725511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22547151675080.

The product of its (nonzero) digits is 1764000, while the sum is 52.

The spelling of 157830061725511 in words is "one hundred fifty-seven trillion, eight hundred thirty billion, sixty-one million, seven hundred twenty-five thousand, five hundred eleven".