148290690581 has 16 divisors (see below), whose sum is σ = 167407655040. Its totient is φ = 130116262080.

The previous prime is 148290690557. The next prime is 148290690599. The reversal of 148290690581 is 185096092841.

It is a cyclic number.

It is not a de Polignac number, because 148290690581 - 2⁶ = 148290690517 is a prime.

It is a super-2 number, since 2×148290690581² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (148290690511) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 864680 + ... + 1021886.

It is an arithmetic number, because the mean of its divisors is an integer number (10462978440).

Almost surely, 2^148290690581 is an apocalyptic number.

148290690581 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

148290690581 is a deficient number, since it is larger than the sum of its proper divisors (19116964459).

148290690581 is a wasteful number, since it uses less digits than its factorization.

148290690581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160204.

The product of its (nonzero) digits is 1244160, while the sum is 53.

The spelling of 148290690581 in words is "one hundred forty-eight billion, two hundred ninety million, six hundred ninety thousand, five hundred eighty-one".