144020571465 has 64 divisors (see below), whose sum is σ = 241391404800. Its totient is φ = 73257062400.

The previous prime is 144020571413. The next prime is 144020571481. The reversal of 144020571465 is 564175020441.

It is not a de Polignac number, because 144020571465 - 2²² = 144016377161 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 6556621 + ... + 6578549.

It is an arithmetic number, because the mean of its divisors is an integer number (3771740700).

Almost surely, 2^144020571465 is an apocalyptic number.

144020571465 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

144020571465 is a deficient number, since it is larger than the sum of its proper divisors (97370833335).

144020571465 is a wasteful number, since it uses less digits than its factorization.

144020571465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22218.

The product of its (nonzero) digits is 134400, while the sum is 39.

It can be divided in two parts, 1440 and 20571465, that added together give a triangular number (20572905 = T₆₄₁₄).

The spelling of 144020571465 in words is "one hundred forty-four billion, twenty million, five hundred seventy-one thousand, four hundred sixty-five".