61003521854 has 16 divisors (see below), whose sum is σ = 105695942256. Its totient is φ = 26097763200.

The previous prime is 61003521811. The next prime is 61003521883. The reversal of 61003521854 is 45812530016.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81555137 + ... + 81555884.

It is an arithmetic number, because the mean of its divisors is an integer number (6605996391).

Almost surely, 2^61003521854 is an apocalyptic number.

61003521854 is a deficient number, since it is larger than the sum of its proper divisors (44692420402).

61003521854 is a wasteful number, since it uses less digits than its factorization.

61003521854 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163111051.

The product of its (nonzero) digits is 28800, while the sum is 35.

The spelling of 61003521854 in words is "sixty-one billion, three million, five hundred twenty-one thousand, eight hundred fifty-four".