74551399650 has 960 divisors, whose sum is σ = 275317878528. Its totient is φ = 14511882240.

The previous prime is 74551399649. The next prime is 74551399693. The reversal of 74551399650 is 5699315547.

74551399650 is a `hidden beast` number, since 7 + 4 + 551 + 39 + 9 + 6 + 50 = 666.

It is a super-2 number, since 2×74551399650² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 479 ways as a sum of consecutive naturals, for example, 457370469 + ... + 457370631.

Almost surely, 2^74551399650 is an apocalyptic number.

74551399650 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 74551399650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (137658939264).

74551399650 is an abundant number, since it is smaller than the sum of its proper divisors (200766478878).

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

74551399650 is a wasteful number, since it uses less digits than its factorization.

74551399650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 297 (or 283 counting only the distinct ones).

The product of its (nonzero) digits is 5103000, while the sum is 54.

The spelling of 74551399650 in words is "seventy-four billion, five hundred fifty-one million, three hundred ninety-nine thousand, six hundred fifty".