61206131850 has 96 divisors (see below), whose sum is σ = 158304201216. Its totient is φ = 15632179200.

The previous prime is 61206131797. The next prime is 61206131867. The reversal of 61206131850 is 5813160216.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 383202 + ... + 518898.

It is an arithmetic number, because the mean of its divisors is an integer number (1649002096).

Almost surely, 2^61206131850 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61206131850, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79152100608).

61206131850 is an abundant number, since it is smaller than the sum of its proper divisors (97098069366).

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

61206131850 is a wasteful number, since it uses less digits than its factorization.

61206131850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135840 (or 135835 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 33.

The spelling of 61206131850 in words is "sixty-one billion, two hundred six million, one hundred thirty-one thousand, eight hundred fifty".