146649709978 has 8 divisors (see below), whose sum is σ = 219984294420. Its totient is φ = 73321611840.

The previous prime is 146649709963. The next prime is 146649710003. The reversal of 146649709978 is 879907946641.

It can be written as a sum of positive squares in 2 ways, for example, as 106088958369 + 40560751609 = 325713^2 + 201397^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×146649709978² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1564653 + ... + 1655728.

Almost surely, 2^146649709978 is an apocalyptic number.

146649709978 is a deficient number, since it is larger than the sum of its proper divisors (73334584442).

146649709978 is a wasteful number, since it uses less digits than its factorization.

146649709978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3243152.

The product of its (nonzero) digits is 164602368, while the sum is 70.

The spelling of 146649709978 in words is "one hundred forty-six billion, six hundred forty-nine million, seven hundred nine thousand, nine hundred seventy-eight".