61255707450 has 96 divisors (see below), whose sum is σ = 173789591040. Its totient is φ = 13987320000.

The previous prime is 61255707437. The next prime is 61255707473. The reversal of 61255707450 is 5470755216.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

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, 1041325 + ... + 1098575.

It is an arithmetic number, because the mean of its divisors is an integer number (1810308240).

Almost surely, 2^61255707450 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61255707450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86894795520).

61255707450 is an abundant number, since it is smaller than the sum of its proper divisors (112533883590).

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

61255707450 is a wasteful number, since it uses less digits than its factorization.

61255707450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58292 (or 58287 counting only the distinct ones).

The product of its (nonzero) digits is 294000, while the sum is 42.

The spelling of 61255707450 in words is "sixty-one billion, two hundred fifty-five million, seven hundred seven thousand, four hundred fifty".