145827715408 has 20 divisors (see below), whose sum is σ = 282665572308. Its totient is φ = 72881761280.

The previous prime is 145827715399. The next prime is 145827715457. The reversal of 145827715408 is 804517728541.

It can be written as a sum of positive squares in 2 ways, for example, as 128789112384 + 17038603024 = 358872^2 + 130532^2 .

It is a super-2 number, since 2×145827715408² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1968523 + ... + 2041258.

Almost surely, 2^145827715408 is an apocalyptic number.

It is an amenable number.

145827715408 is a deficient number, since it is larger than the sum of its proper divisors (136837856900).

145827715408 is a wasteful number, since it uses less digits than its factorization.

145827715408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4012062 (or 4012056 counting only the distinct ones).

The product of its (nonzero) digits is 2508800, while the sum is 52.

The spelling of 145827715408 in words is "one hundred forty-five billion, eight hundred twenty-seven million, seven hundred fifteen thousand, four hundred eight".