149561887950 has 72 divisors (see below), whose sum is σ = 401883090336. Its totient is φ = 39877200000.

The previous prime is 149561887933. The next prime is 149561887987. The reversal of 149561887950 is 59788165941.

149561887950 is a `hidden beast` number, since 1 + 4 + 9 + 5 + 618 + 8 + 7 + 9 + 5 + 0 = 666.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 3557050 + ... + 3598850.

It is an arithmetic number, because the mean of its divisors is an integer number (5581709588).

Almost surely, 2^149561887950 is an apocalyptic number.

149561887950 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

149561887950 is an abundant number, since it is smaller than the sum of its proper divisors (252321202386).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

149561887950 is a wasteful number, since it uses less digits than its factorization.

149561887950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49770 (or 49762 counting only the distinct ones).

The product of its (nonzero) digits is 21772800, while the sum is 63.

The spelling of 149561887950 in words is "one hundred forty-nine billion, five hundred sixty-one million, eight hundred eighty-seven thousand, nine hundred fifty".