145037786728 has 8 divisors (see below), whose sum is σ = 271945850130. Its totient is φ = 72518893360.

The previous prime is 145037786671. The next prime is 145037786753. The reversal of 145037786728 is 827687730541.

It can be written as a sum of positive squares in only one way, i.e., 82436745924 + 62601040804 = 287118^2 + 250202^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9064861663 + ... + 9064861678.

Almost surely, 2^145037786728 is an apocalyptic number.

It is an amenable number.

145037786728 is a deficient number, since it is larger than the sum of its proper divisors (126908063402).

145037786728 is a wasteful number, since it uses less digits than its factorization.

145037786728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18129723347 (or 18129723343 counting only the distinct ones).

The product of its (nonzero) digits is 15805440, while the sum is 58.

The spelling of 145037786728 in words is "one hundred forty-five billion, thirty-seven million, seven hundred eighty-six thousand, seven hundred twenty-eight".