61397059448 has 16 divisors (see below), whose sum is σ = 115567426080. Its totient is φ = 30579079168.

The previous prime is 61397059421. The next prime is 61397059481. The reversal of 61397059448 is 84495079316.

It is a super-2 number, since 2×61397059448² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 61397059393 and 61397059402.

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 3 ways as a sum of consecutive naturals, for example, 14929136 + ... + 14933247.

It is an arithmetic number, because the mean of its divisors is an integer number (7222964130).

Almost surely, 2^61397059448 is an apocalyptic number.

It is an amenable number.

61397059448 is a deficient number, since it is larger than the sum of its proper divisors (54170366632).

61397059448 is a wasteful number, since it uses less digits than its factorization.

61397059448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29862646 (or 29862642 counting only the distinct ones).

The product of its (nonzero) digits is 6531840, while the sum is 56.

The spelling of 61397059448 in words is "sixty-one billion, three hundred ninety-seven million, fifty-nine thousand, four hundred forty-eight".