145540137644 has 24 divisors (see below), whose sum is σ = 287430368400. Its totient is φ = 63873414080.

The previous prime is 145540137641. The next prime is 145540137661. The reversal of 145540137644 is 446731045541.

It is a super-4 number, since 4×145540137644⁴ (a number of 46 digits) contains 4444 as substring.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a junction number, because it is equal to n+sod(n) for n = 145540137595 and 145540137604.

It is not an unprimeable number, because it can be changed into a prime (145540137641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57028559 + ... + 57031110.

It is an arithmetic number, because the mean of its divisors is an integer number (11976265350).

Almost surely, 2^145540137644 is an apocalyptic number.

It is an amenable number.

145540137644 is a deficient number, since it is larger than the sum of its proper divisors (141890230756).

145540137644 is a wasteful number, since it uses less digits than its factorization.

145540137644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114059713 (or 114059711 counting only the distinct ones).

The product of its (nonzero) digits is 806400, while the sum is 44.

The spelling of 145540137644 in words is "one hundred forty-five billion, five hundred forty million, one hundred thirty-seven thousand, six hundred forty-four".