131355050251505 has 4 divisors (see below), whose sum is σ = 157626060301812. Its totient is φ = 105084040201200.

The previous prime is 131355050251423. The next prime is 131355050251519. The reversal of 131355050251505 is 505152050553131.

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

It can be written as a sum of positive squares in 2 ways, for example, as 77222405866384 + 54132644385121 = 8787628^2 + 7357489^2 .

It is not a de Polignac number, because 131355050251505 - 2²⁴ = 131355033474289 is a prime.

It is a super-4 number, since 4×131355050251505⁴ (a number of 58 digits) contains 4444 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13135505025146 + ... + 13135505025155.

It is an arithmetic number, because the mean of its divisors is an integer number (39406515075453).

Almost surely, 2^{131355050251505} is an apocalyptic number.

It is an amenable number.

131355050251505 is a deficient number, since it is larger than the sum of its proper divisors (26271010050307).

131355050251505 is an equidigital number, since it uses as much as digits as its factorization.

131355050251505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26271010050306.

The product of its (nonzero) digits is 281250, while the sum is 41.

The spelling of 131355050251505 in words is "one hundred thirty-one trillion, three hundred fifty-five billion, fifty million, two hundred fifty-one thousand, five hundred five".