1551415405144 has 64 divisors (see below), whose sum is σ = 3455553312000. Its totient is φ = 645036577920.

The previous prime is 1551415405139. The next prime is 1551415405151. The reversal of 1551415405144 is 4415045141551.

It is a junction number, because it is equal to n+sod(n) for n = 1551415405097 and 1551415405106.

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 15 ways as a sum of consecutive naturals, for example, 15949444 + ... + 16046419.

It is an arithmetic number, because the mean of its divisors is an integer number (53993020500).

Almost surely, 2^{1551415405144} is an apocalyptic number.

It is an amenable number.

1551415405144 is an abundant number, since it is smaller than the sum of its proper divisors (1904137906856).

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

1551415405144 is a wasteful number, since it uses less digits than its factorization.

1551415405144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31995928 (or 31995924 counting only the distinct ones).

The product of its (nonzero) digits is 160000, while the sum is 40.

The spelling of 1551415405144 in words is "one trillion, five hundred fifty-one billion, four hundred fifteen million, four hundred five thousand, one hundred forty-four".