61551236006 has 32 divisors (see below), whose sum is σ = 103090246560. Its totient is φ = 27366603264.

The previous prime is 61551235987. The next prime is 61551236027. The reversal of 61551236006 is 60063215516.

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, 241886 + ... + 426158.

It is an arithmetic number, because the mean of its divisors is an integer number (3221570205).

Almost surely, 2^61551236006 is an apocalyptic number.

61551236006 is a deficient number, since it is larger than the sum of its proper divisors (41539010554).

61551236006 is a wasteful number, since it uses less digits than its factorization.

61551236006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184760.

The product of its (nonzero) digits is 32400, while the sum is 35.

The spelling of 61551236006 in words is "sixty-one billion, five hundred fifty-one million, two hundred thirty-six thousand, six".