142487617551 has 16 divisors (see below), whose sum is σ = 191242512384. Its totient is φ = 94362544224.

The previous prime is 142487617549. The next prime is 142487617631. The reversal of 142487617551 is 155716784241.

It is not a de Polignac number, because 142487617551 - 2¹ = 142487617549 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 142487617494 and 142487617503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142487617511) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1907166 + ... + 1980468.

It is an arithmetic number, because the mean of its divisors is an integer number (11952657024).

Almost surely, 2^142487617551 is an apocalyptic number.

142487617551 is a deficient number, since it is larger than the sum of its proper divisors (48754894833).

142487617551 is a wasteful number, since it uses less digits than its factorization.

142487617551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77590.

The product of its digits is 1881600, while the sum is 51.

The spelling of 142487617551 in words is "one hundred forty-two billion, four hundred eighty-seven million, six hundred seventeen thousand, five hundred fifty-one".