61167028101780 has 48 divisors (see below), whose sum is σ = 171302230189440. Its totient is φ = 16307916874368.

The previous prime is 61167028101757. The next prime is 61167028101797. The reversal of 61167028101780 is 8710182076116.

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, 102531960 + ... + 103126799.

It is an arithmetic number, because the mean of its divisors is an integer number (3568796462280).

Almost surely, 2^{61167028101780} is an apocalyptic number.

61167028101780 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

61167028101780 is an abundant number, since it is smaller than the sum of its proper divisors (110135202087660).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61167028101780 is a wasteful number, since it uses less digits than its factorization.

61167028101780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205663728 (or 205663726 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 48.

The spelling of 61167028101780 in words is "sixty-one trillion, one hundred sixty-seven billion, twenty-eight million, one hundred one thousand, seven hundred eighty".