61209893376 has 200 divisors, whose sum is σ = 190641664224. Its totient is φ = 19515893760.

The previous prime is 61209893363. The next prime is 61209893429. The reversal of 61209893376 is 67339890216.

61209893376 is a `hidden beast` number, since 61 + 209 + 8 + 9 + 3 + 376 = 666.

It is a super-3 number, since 3×61209893376³ (a number of 33 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

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

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 921771 + ... + 985941.

Almost surely, 2^61209893376 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 61209893376, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (95320832112).

61209893376 is an abundant number, since it is smaller than the sum of its proper divisors (129431770848).

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

61209893376 is an equidigital number, since it uses as much as digits as its factorization.

61209893376 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64224 (or 64199 counting only the distinct ones).

The product of its (nonzero) digits is 2939328, while the sum is 54.

The spelling of 61209893376 in words is "sixty-one billion, two hundred nine million, eight hundred ninety-three thousand, three hundred seventy-six".