149666839970 has 16 divisors (see below), whose sum is σ = 269420326848. Its totient is φ = 59862288240.

The previous prime is 149666839967. The next prime is 149666839979. The reversal of 149666839970 is 79938666941.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 149666839970.

It is not an unprimeable number, because it can be changed into a prime (149666839979) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 412886 + ... + 685425.

It is an arithmetic number, because the mean of its divisors is an integer number (16838770428).

Almost surely, 2^149666839970 is an apocalyptic number.

149666839970 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

149666839970 is a deficient number, since it is larger than the sum of its proper divisors (119753486878).

149666839970 is a wasteful number, since it uses less digits than its factorization.

149666839970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1111945.

The product of its (nonzero) digits is 105815808, while the sum is 68.

The spelling of 149666839970 in words is "one hundred forty-nine billion, six hundred sixty-six million, eight hundred thirty-nine thousand, nine hundred seventy".