55742978049 has 48 divisors (see below), whose sum is σ = 83571769344. Its totient is φ = 33015517920.

The previous prime is 55742978009. The next prime is 55742978077. The reversal of 55742978049 is 94087924755.

It is not a de Polignac number, because 55742978049 - 2¹³ = 55742969857 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 55742977983 and 55742978001.

It is not an unprimeable number, because it can be changed into a prime (55742978009) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3079744 + ... + 3097790.

It is an arithmetic number, because the mean of its divisors is an integer number (1741078528).

Almost surely, 2^55742978049 is an apocalyptic number.

It is an amenable number.

55742978049 is a deficient number, since it is larger than the sum of its proper divisors (27828791295).

55742978049 is a wasteful number, since it uses less digits than its factorization.

55742978049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18266 (or 18255 counting only the distinct ones).

The product of its (nonzero) digits is 25401600, while the sum is 60.

The spelling of 55742978049 in words is "fifty-five billion, seven hundred forty-two million, nine hundred seventy-eight thousand, forty-nine".