61828357690 has 16 divisors (see below), whose sum is σ = 121408411680. Its totient is φ = 22483039120.

The previous prime is 61828357667. The next prime is 61828357699. The reversal of 61828357690 is 9675382816.

It is a super-2 number, since 2×61828357690² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (55).

It is not an unprimeable number, because it can be changed into a prime (61828357699) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 281037880 + ... + 281038099.

It is an arithmetic number, because the mean of its divisors is an integer number (7588025730).

Almost surely, 2^61828357690 is an apocalyptic number.

61828357690 is a deficient number, since it is larger than the sum of its proper divisors (59580053990).

61828357690 is a wasteful number, since it uses less digits than its factorization.

61828357690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 562075997.

The product of its (nonzero) digits is 4354560, while the sum is 55.

The spelling of 61828357690 in words is "sixty-one billion, eight hundred twenty-eight million, three hundred fifty-seven thousand, six hundred ninety".