61401678824112 has 80 divisors (see below), whose sum is σ = 180564620767488. Its totient is φ = 17797588061440.

The previous prime is 61401678824093. The next prime is 61401678824141. The reversal of 61401678824112 is 21142887610416.

It is a happy number.

It is a super-3 number, since 3×61401678824112³ (a number of 42 digits) contains 333 as substring.

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 15 ways as a sum of consecutive naturals, for example, 2528054343 + ... + 2528078630.

Almost surely, 2^{61401678824112} is an apocalyptic number.

It is an amenable number.

61401678824112 is an abundant number, since it is smaller than the sum of its proper divisors (119162941943376).

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

61401678824112 is a wasteful number, since it uses less digits than its factorization.

61401678824112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5056133018 (or 5056133012 counting only the distinct ones).

The product of its (nonzero) digits is 1032192, while the sum is 51.

The spelling of 61401678824112 in words is "sixty-one trillion, four hundred one billion, six hundred seventy-eight million, eight hundred twenty-four thousand, one hundred twelve".