61771500002 has 8 divisors (see below), whose sum is σ = 92720243712. Its totient is φ = 30864752100.

The previous prime is 61771499987. The next prime is 61771500047. The reversal of 61771500002 is 20000517716.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10495274 + ... + 10501157.

It is an arithmetic number, because the mean of its divisors is an integer number (11590030464).

Almost surely, 2^61771500002 is an apocalyptic number.

61771500002 is a deficient number, since it is larger than the sum of its proper divisors (30948743710).

61771500002 is a wasteful number, since it uses less digits than its factorization.

61771500002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20997904.

The product of its (nonzero) digits is 2940, while the sum is 29.

The spelling of 61771500002 in words is "sixty-one billion, seven hundred seventy-one million, five hundred thousand, two".