145731571461 has 48 divisors (see below), whose sum is σ = 241568011776. Its totient is φ = 82931102208.

The previous prime is 145731571439. The next prime is 145731571483. The reversal of 145731571461 is 164175137541.

145731571461 is a `hidden beast` number, since 1 + 4 + 5 + 7 + 31 + 571 + 46 + 1 = 666.

145731571461 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (145731571439) and next prime (145731571483).

It is not a de Polignac number, because 145731571461 - 2²¹ = 145729474309 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145731571061) 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 47 ways as a sum of consecutive naturals, for example, 43986141 + ... + 43989453.

It is an arithmetic number, because the mean of its divisors is an integer number (5032666912).

Almost surely, 2^145731571461 is an apocalyptic number.

It is an amenable number.

145731571461 is a deficient number, since it is larger than the sum of its proper divisors (95836440315).

145731571461 is a wasteful number, since it uses less digits than its factorization.

145731571461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6002 (or 5999 counting only the distinct ones).

The product of its digits is 352800, while the sum is 45.

The spelling of 145731571461 in words is "one hundred forty-five billion, seven hundred thirty-one million, five hundred seventy-one thousand, four hundred sixty-one".