61448153442 has 32 divisors (see below), whose sum is σ = 133634836608. Its totient is φ = 18723557376.

The previous prime is 61448153381. The next prime is 61448153461. The reversal of 61448153442 is 24435184416.

It is a super-2 number, since 2×61448153442² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 61448153394 and 61448153403.

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 15 ways as a sum of consecutive naturals, for example, 3816223 + ... + 3832290.

It is an arithmetic number, because the mean of its divisors is an integer number (4176088644).

Almost surely, 2^61448153442 is an apocalyptic number.

61448153442 is an abundant number, since it is smaller than the sum of its proper divisors (72186683166).

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

61448153442 is a wasteful number, since it uses less digits than its factorization.

61448153442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7648634.

The product of its digits is 368640, while the sum is 42.

The spelling of 61448153442 in words is "sixty-one billion, four hundred forty-eight million, one hundred fifty-three thousand, four hundred forty-two".