667650090030 has 256 divisors, whose sum is σ = 2039528595456. Its totient is φ = 135841605120.

The previous prime is 667650090007. The next prime is 667650090059. The reversal of 667650090030 is 30090056766.

It is a Harshad number since it is a multiple of its sum of digits (42).

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 127 ways as a sum of consecutive naturals, for example, 64025677 + ... + 64036103.

It is an arithmetic number, because the mean of its divisors is an integer number (7966908576).

Almost surely, 2^667650090030 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 667650090030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1019764297728).

667650090030 is an abundant number, since it is smaller than the sum of its proper divisors (1371878505426).

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

667650090030 is a wasteful number, since it uses less digits than its factorization.

667650090030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11031.

The product of its (nonzero) digits is 204120, while the sum is 42.

The spelling of 667650090030 in words is "six hundred sixty-seven billion, six hundred fifty million, ninety thousand, thirty".