148009128861 has 12 divisors (see below), whose sum is σ = 216916960736. Its totient is φ = 89702502120.

The previous prime is 148009128857. The next prime is 148009128863. The reversal of 148009128861 is 168821900841.

It is not a de Polignac number, because 148009128861 - 2² = 148009128857 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 148009128861.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (148009128863) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 203868961 + ... + 203869686.

Almost surely, 2^148009128861 is an apocalyptic number.

148009128861 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

148009128861 is a deficient number, since it is larger than the sum of its proper divisors (68907831875).

148009128861 is a wasteful number, since it uses less digits than its factorization.

148009128861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 407738672 (or 407738661 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 48.

The spelling of 148009128861 in words is "one hundred forty-eight billion, nine million, one hundred twenty-eight thousand, eight hundred sixty-one".