145897008017481 has 48 divisors (see below), whose sum is σ = 244794322659328. Its totient is φ = 82006543000800.

The previous prime is 145897008017443. The next prime is 145897008017489. The reversal of 145897008017481 is 184710800798541.

145897008017481 is a `hidden beast` number, since 1 + 4 + 5 + 8 + 9 + 70 + 0 + 80 + 1 + 7 + 481 = 666.

It is not a de Polignac number, because 145897008017481 - 2¹³ = 145897008009289 is a prime.

It is a super-2 number, since 2×145897008017481² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145897008017489) 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, 22093825 + ... + 27927246.

Almost surely, 2^{145897008017481} is an apocalyptic number.

It is an amenable number.

145897008017481 is a deficient number, since it is larger than the sum of its proper divisors (98897314641847).

145897008017481 is a wasteful number, since it uses less digits than its factorization.

145897008017481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50021842 (or 50021839 counting only the distinct ones).

The product of its (nonzero) digits is 18063360, while the sum is 63.

The spelling of 145897008017481 in words is "one hundred forty-five trillion, eight hundred ninety-seven billion, eight million, seventeen thousand, four hundred eighty-one".