547642180642 has 4 divisors (see below), whose sum is σ = 821463270966. Its totient is φ = 273821090320.

The previous prime is 547642180633. The next prime is 547642180663. The reversal of 547642180642 is 246081246745.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 246081246745 = 5 ⋅49216249349.

It can be written as a sum of positive squares in only one way, i.e., 308314778121 + 239327402521 = 555261^2 + 489211^2 .

It is a super-3 number, since 3×547642180642³ (a number of 36 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 136910545159 + ... + 136910545162.

Almost surely, 2^547642180642 is an apocalyptic number.

547642180642 is a deficient number, since it is larger than the sum of its proper divisors (273821090324).

547642180642 is a wasteful number, since it uses less digits than its factorization.

547642180642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273821090323.

The product of its (nonzero) digits is 2580480, while the sum is 49.

The spelling of 547642180642 in words is "five hundred forty-seven billion, six hundred forty-two million, one hundred eighty thousand, six hundred forty-two".