61654357400 has 48 divisors (see below), whose sum is σ = 143419020000. Its totient is φ = 24649246080.

The previous prime is 61654357379. The next prime is 61654357411. The reversal of 61654357400 is 475345616.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 322694 + ... + 476906.

It is an arithmetic number, because the mean of its divisors is an integer number (2987896250).

Almost surely, 2^61654357400 is an apocalyptic number.

It is an amenable number.

61654357400 is an abundant number, since it is smaller than the sum of its proper divisors (81764662600).

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

61654357400 is a wasteful number, since it uses less digits than its factorization.

61654357400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156228 (or 156219 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 41.

The spelling of 61654357400 in words is "sixty-one billion, six hundred fifty-four million, three hundred fifty-seven thousand, four hundred".