145505137557 has 32 divisors (see below), whose sum is σ = 212204684160. Its totient is φ = 88140349440.

The previous prime is 145505137543. The next prime is 145505137559. The reversal of 145505137557 is 755731505541.

It is not a de Polignac number, because 145505137557 - 2¹⁴ = 145505121173 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145505137559) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3661957 + ... + 3701477.

It is an arithmetic number, because the mean of its divisors is an integer number (6631396380).

Almost surely, 2^145505137557 is an apocalyptic number.

It is an amenable number.

145505137557 is a deficient number, since it is larger than the sum of its proper divisors (66699546603).

145505137557 is a wasteful number, since it uses less digits than its factorization.

145505137557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41013.

The product of its (nonzero) digits is 1837500, while the sum is 48.

The spelling of 145505137557 in words is "one hundred forty-five billion, five hundred five million, one hundred thirty-seven thousand, five hundred fifty-seven".