61320950208 has 840 divisors, whose sum is σ = 227823028224. Its totient is φ = 15956352000.

The previous prime is 61320950179. The next prime is 61320950261. The reversal of 61320950208 is 80205902316.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 406098933 + ... + 406099083.

Almost surely, 2^61320950208 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61320950208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (113911514112).

61320950208 is an abundant number, since it is smaller than the sum of its proper divisors (166502078016).

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

61320950208 is a wasteful number, since it uses less digits than its factorization.

61320950208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251 (or 213 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The spelling of 61320950208 in words is "sixty-one billion, three hundred twenty million, nine hundred fifty thousand, two hundred eight".