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61972182922 = 21319233538411
BaseRepresentation
bin111001101101110101…
…000111011110001010
312220221221121002010011
4321231311013132022
52003404334323142
644245234542134
74322504602066
oct715565073612
9186857532104
1061972182922
1124311755301
121001643794a
135ac8215030
142ddc78aaa6
15192a96d417
hexe6dd4778a

61972182922 has 32 divisors (see below), whose sum is σ = 105830262720. Its totient is φ = 26980801920.

The previous prime is 61972182919. The next prime is 61972182989. The reversal of 61972182922 is 22928127916.

It is a happy number.

It is a super-2 number, since 2×619721829222 (a number of 22 digits) contains 22 as substring.

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, 154104 + ... + 384307.

It is an arithmetic number, because the mean of its divisors is an integer number (3307195710).

Almost surely, 261972182922 is an apocalyptic number.

61972182922 is a deficient number, since it is larger than the sum of its proper divisors (43858079798).

61972182922 is a wasteful number, since it uses less digits than its factorization.

61972182922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 538678.

The product of its digits is 435456, while the sum is 49.

The spelling of 61972182922 in words is "sixty-one billion, nine hundred seventy-two million, one hundred eighty-two thousand, nine hundred twenty-two".

Divisors: 1 2 13 19 26 38 233 247 466 494 3029 4427 6058 8854 57551 115102 538411 1076822 6999343 10229809 13998686 20459618 125449763 132987517 250899526 265975034 1630846919 2383545497 3261693838 4767090994 30986091461 61972182922