61278811102 has 16 divisors (see below), whose sum is σ = 95822769024. Its totient is φ = 29357460000.

The previous prime is 61278811081. The next prime is 61278811129. The reversal of 61278811102 is 20111887216.

It is a super-4 number, since 4×61278811102⁴ (a number of 44 digits) contains 4444 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4886649 + ... + 4899172.

It is an arithmetic number, because the mean of its divisors is an integer number (5988923064).

Almost surely, 2^61278811102 is an apocalyptic number.

61278811102 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

61278811102 is a deficient number, since it is larger than the sum of its proper divisors (34543957922).

61278811102 is a wasteful number, since it uses less digits than its factorization.

61278811102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9785955.

The product of its (nonzero) digits is 10752, while the sum is 37.

The spelling of 61278811102 in words is "sixty-one billion, two hundred seventy-eight million, eight hundred eleven thousand, one hundred two".