148978843587 has 72 divisors (see below), whose sum is σ = 261379450800. Its totient is φ = 81426296448.

The previous prime is 148978843561. The next prime is 148978843589. The reversal of 148978843587 is 785348879841.

148978843587 is a `hidden beast` number, since 1 + 48 + 9 + 78 + 8 + 435 + 87 = 666.

It is not a de Polignac number, because 148978843587 - 2¹⁶ = 148978778051 is a prime.

It is a super-2 number, since 2×148978843587² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (148978843589) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1313989 + ... + 1422857.

It is an arithmetic number, because the mean of its divisors is an integer number (3630270150).

Almost surely, 2^148978843587 is an apocalyptic number.

148978843587 is a deficient number, since it is larger than the sum of its proper divisors (112400607213).

148978843587 is a wasteful number, since it uses less digits than its factorization.

148978843587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109025 (or 109015 counting only the distinct ones).

The product of its digits is 433520640, while the sum is 72.

The spelling of 148978843587 in words is "one hundred forty-eight billion, nine hundred seventy-eight million, eight hundred forty-three thousand, five hundred eighty-seven".