61603791000 has 64 divisors (see below), whose sum is σ = 192203837280. Its totient is φ = 16427676800.

The previous prime is 61603790981. The next prime is 61603791001. The reversal of 61603791000 is 19730616.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61603791001) 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 15 ways as a sum of consecutive naturals, for example, 10264299 + ... + 10270298.

Almost surely, 2^61603791000 is an apocalyptic number.

61603791000 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

61603791000 is an abundant number, since it is smaller than the sum of its proper divisors (130600046280).

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

61603791000 is a wasteful number, since it uses less digits than its factorization.

61603791000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20534621 (or 20534607 counting only the distinct ones).

The product of its (nonzero) digits is 6804, while the sum is 33.

The spelling of 61603791000 in words is "sixty-one billion, six hundred three million, seven hundred ninety-one thousand".