691047150220 has 24 divisors (see below), whose sum is σ = 1658513160864. Its totient is φ = 236930451456.

The previous prime is 691047150107. The next prime is 691047150223. The reversal of 691047150220 is 22051740196.

It is a self number, because there is not a number n which added to its sum of digits gives 691047150220.

It is not an unprimeable number, because it can be changed into a prime (691047150223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2468025397 + ... + 2468025676.

It is an arithmetic number, because the mean of its divisors is an integer number (69104715036).

Almost surely, 2^691047150220 is an apocalyptic number.

It is an amenable number.

691047150220 is an abundant number, since it is smaller than the sum of its proper divisors (967466010644).

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

691047150220 is a wasteful number, since it uses less digits than its factorization.

691047150220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4936051089 (or 4936051087 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 37.

The spelling of 691047150220 in words is "six hundred ninety-one billion, forty-seven million, one hundred fifty thousand, two hundred twenty".