61555408286 has 32 divisors (see below), whose sum is σ = 95346599040. Its totient is φ = 29788286976.

The previous prime is 61555408249. The next prime is 61555408297. The reversal of 61555408286 is 68280455516.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17440970 + ... + 17444498.

It is an arithmetic number, because the mean of its divisors is an integer number (2979581220).

Almost surely, 2^61555408286 is an apocalyptic number.

61555408286 is a deficient number, since it is larger than the sum of its proper divisors (33791190754).

61555408286 is a wasteful number, since it uses less digits than its factorization.

61555408286 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5588.

The product of its (nonzero) digits is 2304000, while the sum is 50.

The spelling of 61555408286 in words is "sixty-one billion, five hundred fifty-five million, four hundred eight thousand, two hundred eighty-six".